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dnsmasq: updated to 2.90 version 2.90 Fix reversion in --rev-server introduced in 2.88 which caused breakage if the prefix length is not exactly divisible by 8 (IPv4) or 4 (IPv6). Fix possible SEGV when there server(s) for a particular domain are configured, but no server which is not qualified for a particular domain. Thanks to Daniel Danzberger for spotting this bug. Set the default maximum DNS UDP packet sice to 1232. This has been the recommended value since 2020 because it's the largest value that avoid fragmentation, and fragmentation is just not reliable on the modern internet, especially for IPv6. It's still possible to override this with --edns-packet-max for special circumstances. Add --no-dhcpv4-interface and --no-dhcpv6-interface for better control over which inetrfaces are providing DHCP service. Fix issue with stale caching: After replying with stale data, dnsmasq sends the query upstream to refresh the cache asynchronously and sometimes sends the wrong packet: packet length can be wrong, and if an EDE marking stale data is added to the answer that can end up in the query also. This bug only seems to cause problems when the usptream server is a DOH/DOT proxy. Thanks to Justin He for the bug report. Add configurable caching for arbitrary RR-types. Add --filter-rr option, to filter arbitrary RR-types. --filter-rr=ANY has a special meaning: it filters the answers to queries for the ANY RR-type. Add limits on the resources used to do DNSSEC validation. DNSSEC introduces a potential CPU DoS, because a crafted domain can force a validator to a large number of cryptographic operations whilst attempting to do validation. When using TCP transport a DNSKEY RRset contain thousands of members and any RRset can have thousands of signatures. The potential number of signature validations to follow the RFC for validation for one RRset is the cross product of the keys and signatures, so millions. In practice, the actual numbers are much lower, so attacks can be mitigated by limiting the amount of cryptographic "work" to a much lower amount. The actual limits are number a signature validation fails per RRset(20), number of signature validations and hash computations per query(200), number of sub-queries to fetch DS and DNSKEY RRsets per query(40), and the number of iterations in a NSEC3 record(150). These values are sensible, but there is, as yet, no standardisation on the values for a "conforming" domain, so a new option --dnssec-limit is provided should they need to be altered. The algorithm to validate DS records has also been altered to reduce the maximum work from cross product of the number of DS records and number of DNSKEYs to the cross product of the number of DS records and supported DS digest types. As the number of DS digest types is in single figures, this reduces the exposure. Credit is due to Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner from the German National Research Center for Applied Cybersecurity ATHENE for finding this vulnerability. CVE 2023-50387 and CVE 2023-50868 apply. Note that the is a security vulnerablity only when DNSSEC validation is enabled.
net/dnsmasq: Patch away ctype(3) abuse.
dnsmasq: updated to 2.89 version 2.89 Fix bug introduced in 2.88 (commit fe91134b) which can result in corruption of the DNS cache internal data structures and logging of "cache internal error". This has only been seen in one place in the wild, and it took considerable effort to even generate a test case to reproduce it, but there's no way to be sure it won't strike, and the effect is to break the cache badly. Installations with DNSSEC enabled are more likely to see the problem, but not running DNSSEC does not guarantee that it won't happen. Thanks to Timo van Roermund for reporting the bug and for his great efforts in chasing it down.
dnsmasq: updated to 2.88 version 2.88 Fix bug in --dynamic-host when an interface has /16 IPv4 address. Thanks to Mark Dietzer for spotting this. Add --fast-dns-retry option. This gives dnsmasq the ability to originate retries for upstream DNS queries itself, rather than relying on the downstream client. This is most useful when doing DNSSEC over unreliable upstream networks. It comes with some cost in memory usage and network bandwidth. Add --use-stale-cache option. When set, if a DNS name exists in the cache, but its time-to-live has expired, dnsmasq will return the data anyway. (It attempts to refresh the data with an upstream query after returning the stale data.) This can improve speed and reliability. It comes at the expense of sometimes returning out-of-date data and less efficient cache utilisation, since old data cannot be flushed when its TTL expires, so the cache becomes strictly least-recently-used. Make --hostsdir (but NOT --dhcp-hostsdir and --dhcp-optsdir) handle removal of whole files or entries within files. Thanks to Dominik Derigs for the initial patches for this. Fix bug, introduced in 2.87, which could result in DNS servers being removed from the configuration when reloading server configuration from DBus, or re-reading /etc/resolv.conf Only servers from the same source should be replaced, but some servers from other sources (i.e., hard coded or another dynamic source) could mysteriously disappear. Thanks to all reporting this, but especially Christopher J. Madsen who reduced the problem to an easily reproducible case which saved much labour in finding it. Add --no-round-robin option. Allow domain names as well as IP addresses when specifying upstream DNS servers. There are some gotchas associated with this (it will mysteriously fail to work if the dnsmasq instance being started is in the path from the system resolver to the DNS), and a seemingly sensible configuration like --server=domain.name@1.2.3.4 is unactionable if domain.name only resolves to an IPv6 address). There are, however, cases where is can be useful. Thanks to Dominik Derigs for the patch. Handle DS records for unsupported crypto algorithms correctly. Such a DS, as long as it is validated, should allow answers in the domain it attests to be returned as unvalidated, and not as a validation error. Optimise reading large numbers of --server options. When re-reading upstream servers from /etc/resolv.conf or other sources that can change dnsmasq tries to avoid memory fragmentation by re-using existing records that are being re-read unchanged. This involves seaching all the server records for each new one installed. During startup this search is pointless, and can cause long start times with thousands of --server options because the work needed is O(n^2). Handle this case more intelligently. Thanks to Ye Zhou for spotting the problem and an initial patch. If we detect that a DNS reply from upstream is malformed don't return it to the requestor; send a SEVFAIL rcode instead.
dnsmasq: updated to 2.87 version 2.87 Allow arbitrary prefix lengths in --rev-server and --domain=....,local Replace --address=/#/..... functionality which got missed in the 2.86 domain search rewrite. Add --nftset option, like --ipset but for the newer nftables. Thanks to Chen Zhenge for the patch. Add --filter-A and --filter-AAAA options, to remove IPv4 or IPv6 addresses from DNS answers. Fix crash doing netbooting when --port is set to zero to disable the DNS server. Thanks to Drexl Johannes for the bug report. Generalise --dhcp-relay. Sending via broadcast/multicast is now supported for both IPv4 and IPv6 and the configuration syntax made easier (but backwards compatible). Add snooping of IPv6 prefix-delegations to the DHCP-relay system. Finesse parsing of --dhcp-remoteid and --dhcp-subscrid. To be treated as hex, the pattern must consist of only hex digits AND contain at least one ':'. Thanks to Bengt-Erik Sandstrom who tripped over a pattern consisting of a decimal number which was interpreted surprisingly. Include client address in TFTP file-not-found error reports. Thanks to Stefan Rink for the initial patch, which has been re-worked by me (srk). All bugs mine. Note in manpage the change in behaviour of -address. This behaviour actually changed in v2.86, but was undocumented there. From 2.86 on, (eg) --address=/example.com/1.2.3.4 ONLY applies to A queries. All other types of query will be sent upstream. Pre 2.86, that would catch the whole example.com domain and queries for other types would get a local NODATA answer. The pre-2.86 behaviour is still available, by configuring --address=/example.com/1.2.3.4 --local=/example.com/ Fix problem with binding DHCP sockets to an individual interface. Despite the fact that the system call tales the interface _name_ as a parameter, it actually, binds the socket to interface _index_. Deleting the interface and creating a new one with the same name leaves the socket bound to the old index. (Creating new sockets always allocates a fresh index, they are not reused). We now take this behaviour into account and keep up with changing indexes. Add --conf-script configuration option. Enhance --domain to accept, for instance, --domain=net2.thekelleys.org.uk,eth2 so that hosts get a domain which relects the interface they are attached to in a way which doesn't require hard-coding addresses. Thanks to Sten Spans for the idea. Fix write-after-free error in DHCPv6 server code. CVE-2022-0934 refers. Add the ability to specify destination port in DHCP-relay mode. This change also removes a previous bug where --dhcp-alternate-port would affect the port used to relay _to_ as well as the port being listened on. The new feature allows configuration to provide bug-for-bug compatibility, if required. Thanks to Damian Kaczkowski for the feature suggestion. Bound the value of UDP packet size in the EDNS0 header of forwarded queries to the configured or default value of edns-packet-max. There's no point letting a client set a larger value if we're unable to return the answer. Thanks to Bertie Taylor for pointing out the problem and supplying the patch. Fix problem with the configuration --server=/some.domain/# --address=/#/<ip> --server=<server_ip> This would return <ip> for queries in some.domain, rather than forwarding the query via the default server. Tweak DHCPv6 relay code so that packets relayed towards a server have source address on the server-facing network, not the client facing network. Thanks to Luis Thomas for spotting this and initial patch.
net: Replace RMD160 checksums with BLAKE2s checksums All checksums have been double-checked against existing RMD160 and SHA512 hashes Not committed (merge conflicts...): net/radsecproxy/distinfo The following distfiles could not be fetched (fetched conditionally?): ./net/citrix_ica/distinfo citrix_ica-10.6.115659/en.linuxx86.tar.gz ./net/djbdns/distinfo dnscache-1.05-multiple-ip.patch ./net/djbdns/distinfo djbdns-1.05-test28.diff.xz ./net/djbdns/distinfo djbdns-1.05-ignoreip2.patch ./net/djbdns/distinfo djbdns-1.05-multiip.diff ./net/djbdns/distinfo djbdns-cachestats.patch
net: Remove SHA1 hashes for distfiles
dnsmasq: updated to 2.86 version 2.86 Handle DHCPREBIND requests in the DHCPv6 server code. Thanks to Aichun Li for spotting this omission, and the initial patch. Fix bug which caused dnsmasq to lose track of processes forked to handle TCP DNS connections under heavy load. The code checked that at least one free process table slot was available before listening on TCP sockets, but didn't take into account that more than one TCP connection could arrive, so that check was not sufficient to ensure that there would be slots for all new processes. It compounded this error by silently failing to store the process when it did run out of slots. Even when this bug is triggered, all the right things happen, and answers are still returned. Only under very exceptional circumstances, does the bug manifest itself: see https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2021q2/014976.html Thanks to Tijs Van Buggenhout for finding the conditions under which the bug manifests itself, and then working out exactly what was going on. Major rewrite of the DNS server and domain handling code. This should be largely transparent, but it drastically improves performance and reduces memory foot-print when configuring large numbers domains of the form local=/adserver.com/ or local=/adserver.com/# Lookup times now grow as log-to-base-2 of the number of domains, rather than greater than linearly, as before. The change makes multiple addresses associated with a domain work address=/example.com/1.2.3.4 address=/example.com/5.6.7.8 It also handles multiple upstream servers for a domain better; using the same try/retry algorithms as non domain-specific servers. This also applies to DNSSEC-generated queries. Finally, some of the oldest and gnarliest code in dnsmasq has had a significant clean-up. It's far from perfect, but it _is_ better. Revise resource handling for number of concurrent DNS queries. This used to have a global limit, but that has a problem when using different servers for different upstream domains. Queries which are routed by domain to an upstream server which is not responding will build up and trigger the limit, which breaks DNS service for all other domains which could be handled by other servers. The change is to make the limit per server-group, where a server group is the set of servers configured for a particular domain. In the common case, where only default servers are declared, there is no effective change. Improve efficiency of DNSSEC. The sharing point for DNSSEC RR data used to be when it entered the cache, having been validated. After that queries requiring the KEY or DS records would share the cached values. There is a common case in dual-stack hosts that queries for A and AAAA records for the same domain are made simultaneously. If required keys were not in the cache, this would result in two requests being sent upstream for the same key data (and all the subsequent chain-of-trust queries.) Now we combine these requests and elide the duplicates, resulting in fewer queries upstream and better performance. To keep a better handle on what's going on, the "extra" logging mode has been modified to associate queries and answers for DNSSEC queries in the same way as ordinary queries. The requesting address and port have been removed from DNSSEC logging lines, since this is no longer strictly defined. Connection track mark based DNS query filtering. Thanks to Etan Kissling for implementing this It extends query filtering support beyond what is currently possible with the `--ipset` configuration option, by adding support for: 1) Specifying allowlists on a per-client basis, based on their associated Linux connection track mark. 2) Dynamic configuration of allowlists via Ubus. 3) Reporting when a DNS query resolves or is rejected via Ubus. 4) DNS name patterns containing wildcards. Disallowed queries are not forwarded; they are rejected with a REFUSED error code. Allow smaller than 64 prefix lengths in synth-domain, with caveats. --synth-domain=1234:4567::/56,example.com is now valid. Make domains generated by --synth-domain appear in replies when in authoritative mode. Ensure CAP_NET_ADMIN capability is available when conntrack is configured. Thanks to Yick Xie for spotting the lack of this. When --dhcp-hostsfile --dhcp-optsfile and --addn-hosts are given a directory as argument, define the order in which files within that directory are read (alphabetical order of filename). Thanks to Ed Wildgoose for the initial patch and motivation for this.
dnsmasq: updated to 2.85 version 2.85 Fix problem with DNS retries in 2.83/2.84. The new logic in 2.83/2.84 which merges distinct requests for the same domain causes problems with clients which do retries as distinct requests (differing IDs and/or source ports.) The retries just get piggy-backed on the first, failed, request. The logic is now changed so that distinct requests for repeated queries still get merged into a single ID/source port, but they now always trigger a re-try upstream. Thanks to Nicholas Mu for his analysis. Tweak sort order of tags in get-version. v2.84 sorts before v2.83, but v2.83 sorts before v2.83rc1 and 2.83rc1 sorts before v2.83test1. This fixes the problem which lead to 2.84 announcing itself as 2.84rc2. Avoid treating a --dhcp-host which has an IPv6 address as eligible for use with DHCPv4 on the grounds that it has no address, and vice-versa. Thanks to Viktor Papp for spotting the problem. (This bug was fixed was back in 2.67, and then regressed in 2.81). Add --dynamic-host option: A and AAAA records which take their network part from the network of a local interface. Useful for routers with dynamically prefixes. Thanks to Fred F for the suggestion. Teach --bogus-nxdomain and --ignore-address to take an IPv4 subnet. Use random source ports where possible if source addresses/interfaces in use. CVE-2021-3448 applies. Thanks to Petr Menšík for spotting this. It's possible to specify the source address or interface to be used when contacting upstream name servers: server=8.8.8.8@1.2.3.4 or server=8.8.8.8@1.2.3.4#66 or server=8.8.8.8@eth0, and all of these have, until now, used a single socket, bound to a fixed port. This was originally done to allow an error (non-existent interface, or non-local address) to be detected at start-up. This means that any upstream servers specified in such a way don't use random source ports, and are more susceptible to cache-poisoning attacks. We now use random ports where possible, even when the source is specified, so server=8.8.8.8@1.2.3.4 or server=8.8.8.8@eth0 will use random source ports. server=8.8.8.8@1.2.3.4#66 or any use of --query-port will use the explicitly configured port, and should only be done with understanding of the security implications. Note that this change changes non-existing interface, or non-local source address errors from fatal to run-time. The error will be logged and communication with the server not possible. Change the method of allocation of random source ports for DNS. Previously, without min-port or max-port configured, dnsmasq would default to the compiled in defaults for those, which are 1024 and 65535. Now, when neither are configured, it defaults instead to the kernel's ephemeral port range, which is typically 32768 to 60999 on Linux systems. This change eliminates the possibility that dnsmasq may be using a registered port > 1024 when a long-running daemon starts up and wishes to claim it. This change does likely slightly reduce the number of random ports and therefore the protection from reply spoofing. The older behaviour can be restored using the min-port and max-port config switches should that be a concern. Scale the size of the DNS random-port pool based on the value of the --dns-forward-max configuration. Tweak TFTP code to check sender of all received packets, as specified in RFC 1350 para 4.
dnsmasq: updated to 2.84
version 2.84
Unknown changes
version 2.83
Use the values of --min-port and --max-port in outgoing
TCP connections to upstream DNS servers.
Fix a remote buffer overflow problem in the DNSSEC code. Any
dnsmasq with DNSSEC compiled in and enabled is vulnerable to this,
referenced by CVE-2020-25681, CVE-2020-25682, CVE-2020-25683
CVE-2020-25687.
Be sure to only accept UDP DNS query replies at the address
from which the query was originated. This keeps as much entropy
in the {query-ID, random-port} tuple as possible, to help defeat
cache poisoning attacks. Refer: CVE-2020-25684.
Use the SHA-256 hash function to verify that DNS answers
received are for the questions originally asked. This replaces
the slightly insecure SHA-1 (when compiled with DNSSEC) or
the very insecure CRC32 (otherwise). Refer: CVE-2020-25685.
Handle multiple identical near simultaneous DNS queries better.
Previously, such queries would all be forwarded
independently. This is, in theory, inefficent but in practise
not a problem, _except_ that is means that an answer for any
of the forwarded queries will be accepted and cached.
An attacker can send a query multiple times, and for each repeat,
another {port, ID} becomes capable of accepting the answer he is
sending in the blind, to random IDs and ports. The chance of a
succesful attack is therefore multiplied by the number of repeats
of the query. The new behaviour detects repeated queries and
merely stores the clients sending repeats so that when the
first query completes, the answer can be sent to all the
clients who asked. Refer: CVE-2020-25686.
dnsmasq: updated to 2.82 version 2.82 Improve behaviour in the face of network interfaces which come and go and change index. Thanks to Petr Mensik for the patch. Convert hard startup failure on NETLINK_NO_ENOBUFS under qemu-user to a warning. Allow IPv6 addresses ofthe form [::ffff:1.2.3.4] in --dhcp-option. Fix crash under heavy TCP connection load introduced in 2.81. Thanks to Frank for good work chasing this down. Change default lease time for DHCPv6 to one day. Alter calculation of preferred and valid times in router advertisements, so that these do not have a floor applied of the lease time in the dhcp-range if this is not explicitly specified and is merely the default.
dnsmasq: updated to 2.81 version 2.81 Improve cache behaviour for TCP connections. For ease of implementaion, dnsmasq has always forked a new process to handle each incoming TCP connection. A side-effect of this is that any DNS queries answered from TCP connections are not cached: when TCP connections were rare, this was not a problem. With the coming of DNSSEC, it is now the case that some DNSSEC queries have answers which spill to TCP, and if, for instance, this applies to the keys for the root, then those never get cached, and performance is very bad. This fix passes cache entries back from the TCP child process to the main server process, and fixes the problem. Remove the NO_FORK compile-time option, and support for uclinux. In an era where everything has an MMU, this looks like an anachronism, and it adds to (Ok, multiplies!) the combinatorial explosion of compile-time options. Thanks to Kevin Darbyshire-Bryant for the patch. Fix line-counting when reading /etc/hosts and friends; for correct error messages. Thanks to Christian Rosentreter for reporting this. Fix bug in DNS non-terminal code, added in 2.80, which could sometimes cause a NODATA rather than an NXDOMAIN reply. Thanks to Norman Rasmussen, Sven Mueller and Maciej Żenczykowski for spotting and diagnosing the bug and providing patches. Support TCP-fastopen (RFC-7413) on both incoming and outgoing TCP connections, if supported and enabled in the OS. Improve kernel-capability manipulation code under Linux. Dnsmasq now fails early if a required capability is not available, and tries not to request capabilities not required by its configuration. Add --shared-network config. This enables allocation of addresses by the DHCP server in subnets where the server (or relay) does not have an interface on the network in that subnet. Many thanks to kamp.de for sponsoring this feature. Fix broken contrib/lease_tools/dhcp_lease_time.c. A packet validation check got borked in commit 2b38e382 and release 2.80. Thanks to Tomasz Szajner for spotting this. Fix compilation against nettle version 3.5 and later. Fix spurious DNSSEC validation failures when the auth section of a reply contains unsigned RRs from a signed zone, with the exception that NSEC and NSEC3 RRs must always be signed. Thanks to Tore Anderson for spotting and diagnosing the bug. Add --dhcp-ignore-clid. This disables reading of DHCP client identifier option (option 61), so clients are only identified by MAC addresses. Fix a bug which stopped --dhcp-name-match from working when a hostname is supplied in --dhcp-host. Thanks to James Feeney for spotting this. Fix bug which caused very rarely caused zero-length DHCPv6 packets. Thanks to Dereck Higgins for spotting this. Add --tftp-single-port option. Enhance --conf-dir to load files in a deterministic order. Thanks to Evgenii Seliavka for the suggestion and initial patch. In the router advert code, handle case where we have two different interfaces on the same IPv6 net, and we are doing RA/DHCP service on only one of them. Thanks to NIIBE Yutaka for spotting this case and making the initial patch. Support prefixed ranges of ipv6 addresses in dhcp-host. This eases problems chain-netbooting, where each link in the chain requests an address using a different UID. With a single address, only one gets the "static" address, but with this fix, enough addresses can be reserved for all the stages of the boot. Many thanks to Harald Jensås for his work on this idea and earlier patches. Add filtering by tag of --dhcp-host directives. Based on a patch by Harald Jensås. Allow empty server spec in --rev-server, to match --server. Remove DSA signature verification from DNSSEC, as specified in RFC 8624. Thanks to Loganaden Velvindron for the original patch. Add --script-on-renewal option.
dnsmasq: Add compat IPDEFTTL define.
dnsmasq: update to 2.80. add dnssec option (default disabled)
From i3endek, thanks!
version 2.80
Add support for RFC 4039 DHCP rapid commit. Thanks to Ashram Method
for the initial patch and motivation.
Alter the default for dnssec-check-unsigned. Versions of
dnsmasq prior to 2.80 defaulted to not checking unsigned
replies, and used --dnssec-check-unsigned to switch
this on. Such configurations will continue to work as before,
but those which used the default of no checking will need to be
altered to explicitly select no checking. The new default is
because switching off checking for unsigned replies is
inherently dangerous. Not only does it open the possiblity of forged
replies, but it allows everything to appear to be working even
when the upstream namesevers do not support DNSSEC, and in this
case no DNSSEC validation at all is occuring.
Fix DHCP broken-ness when --no-ping AND --dhcp-sequential-ip
are set. Thanks to Daniel Miess for help with this.
Add a facilty to store DNS packets sent/recieved in a
pcap-format file for later debugging. The file location
is given by the --dumpfile option, and a bitmap controlling
which packets should be dumped is given by the --dumpmask
option.
Handle the case of both standard and constructed dhcp-ranges on the
same interface better. We don't now contruct a dhcp-range if there's
already one specified. This allows the specified interface to
have different parameters and avoids advertising the same
prefix twice. Thanks to Luis Marsano for spotting this case.
Allow zone transfer in authoritative mode if auth-peer is specified,
even if auth-sec-servers is not. Thanks to Raphaël Halimi for
the suggestion.
Fix bug which sometimes caused dnsmasq to wrongly return answers
without DNSSEC RRs to queries with the do-bit set, but only when
DNSSEC validation was not enabled.
Thanks to Petr Menšík for spotting this.
Fix missing fatal errors with some malformed options
(server, local, address, rebind-domain-ok, ipset, alias).
Thanks to Eugene Lozovoy for spotting the problem.
Fix crash on startup with a --synth-domain which has no prefix.
Introduced in 2.79. Thanks to Andreas Engel for the bug report.
Fix missing EDNS0 section in some replies generated by local
DNS configuration which confused systemd-resolvd. Thanks to
Steve Dodd for characterising the problem.
Add --dhcp-name-match config option.
Add --caa-record config option.
Implement --address=/example.com/# as (more efficient) syntactic
sugar for --address=/example.com/0.0.0.0 and
--address=/example.com/::
Returning null addresses is a useful technique for ad-blocking.
Thanks to Peter Russell for the suggestion.
Change anti cache-snooping behaviour with queries with the
recursion-desired bit unset. Instead to returning SERVFAIL, we
now always forward, and never answer from the cache. This
allows "dig +trace" command to work.
Include in the example config file a formulation which
stops DHCP clients from claiming the DNS name "wpad".
This is a fix for the CERT Vulnerability VU#598349.
dnsmasq: updated to 2.79 version 2.79 Fix parsing of CNAME arguments, which are confused by extra spaces. Thanks to Diego Aguirre for spotting the bug. Where available, use IP_UNICAST_IF or IPV6_UNICAST_IF to bind upstream servers to an interface, rather than SO_BINDTODEVICE. Thanks to Beniamino Galvani for the patch. Always return a SERVFAIL answer to DNS queries without the recursion desired bit set, UNLESS acting as an authoritative DNS server. This avoids a potential route to cache snooping. Add support for Ed25519 signatures in DNSSEC validation. No longer support RSA/MD5 signatures in DNSSEC validation, since these are not secure. This behaviour is mandated in RFC-6944. Fix incorrect error exit code from dhcp_release6 utility. Thanks Gaudenz Steinlin for the bug report. Use SIGINT (instead of overloading SIGHUP) to turn on DNSSEC time validation when --dnssec-no-timecheck is in use. Note that this is an incompatible change from earlier releases. Allow more than one --bridge-interface option to refer to an interface, so that we can use --bridge-interface=int1,alias1 --bridge-interface=int1,alias2 as an alternative to --bridge-interface=int1,alias1,alias2 Thanks to Neil Jerram for work on this. Fix for DNSSEC with wildcard-derived NSEC records. It's OK for NSEC records to be expanded from wildcards, but in that case, the proof of non-existence is only valid starting at the wildcard name, *.<domain> NOT the name expanded from the wildcard. Without this check it's possible for an attacker to craft an NSEC which wrongly proves non-existence. Thanks to Ralph Dolmans for finding this, and co-ordinating the vulnerability tracking and fix release. CVE-2017-15107 applies. Remove special handling of A-for-A DNS queries. These are no longer a significant problem in the global DNS. http://cs.northwestern.edu/~ychen/Papers/DNS_ToN15.pdf Thanks to Mattias Hellström for the initial patch. Fix failure to delete dynamically created dhcp options from files in -dhcp-optsdir directories. Thanks to Lindgren Fredrik for the bug report. Add to --synth-domain the ability to create names using sequential numbers, as well as encodings of IP addresses. For instance, --synth-domain=thekelleys.org.uk,192.168.0.50,192.168.0.70,internal-* creates 21 domain names of the form internal-4.thekelleys.org.uk over the address range given, with internal-0.thekelleys.org.uk being 192.168.0.50 and internal-20.thekelleys.org.uk being 192.168.0.70 Thanks to Andy Hawkins for the suggestion. Tidy up Crypto code, removing workarounds for ancient versions of libnettle. We now require libnettle 3.
dnsmasq: update to 2.78.
version 2.78
Fix logic of appending ".<layer>" to PXE basename. Thanks to Chris
Novakovic for the patch.
Revert ping-check of address in DHCPDISCOVER if there
already exists a lease for the address. Under some
circumstances, and netbooted windows installation can reply
to pings before if has a DHCP lease and block allocation
of the address it already used during netboot. Thanks to
Jan Psota for spotting this.
Fix DHCP relaying, broken in 2.76 and 2.77 by commit
ff325644c7afae2588583f935f4ea9b9694eb52e. Thanks to
John Fitzgibbon for the diagnosis and patch.
Try other servers if first returns REFUSED when
--strict-order active. Thanks to Hans Dedecker
for the patch
Fix regression in 2.77, ironically added as a security
improvement, which resulted in a crash when a DNS
query exceeded 512 bytes (or the EDNS0 packet size,
if different.) Thanks to Christian Kujau, Arne Woerner
Juan Manuel Fernandez and Kevin Darbyshire-Bryant for
chasing this one down. CVE-2017-13704 applies.
Fix heap overflow in DNS code. This is a potentially serious
security hole. It allows an attacker who can make DNS
requests to dnsmasq, and who controls the contents of
a domain, which is thereby queried, to overflow
(by 2 bytes) a heap buffer and either crash, or
even take control of, dnsmasq.
CVE-2017-14491 applies.
Credit to Felix Wilhelm, Fermin J. Serna, Gabriel Campana
Kevin Hamacher and Ron Bowes of the Google Security Team for
finding this.
Fix heap overflow in IPv6 router advertisement code.
This is a potentially serious security hole, as a
crafted RA request can overflow a buffer and crash or
control dnsmasq. Attacker must be on the local network.
CVE-2017-14492 applies.
Credit to Felix Wilhelm, Fermin J. Serna, Gabriel Campana
and Kevin Hamacher of the Google Security Team for
finding this.
Fix stack overflow in DHCPv6 code. An attacker who can send
a DHCPv6 request to dnsmasq can overflow the stack frame and
crash or control dnsmasq.
CVE-2017-14493 applies.
Credit to Felix Wilhelm, Fermin J. Serna, Gabriel Campana
Kevin Hamacher and Ron Bowes of the Google Security Team for
finding this.
Fix information leak in DHCPv6. A crafted DHCPv6 packet can
cause dnsmasq to forward memory from outside the packet
buffer to a DHCPv6 server when acting as a relay.
CVE-2017-14494 applies.
Credit to Felix Wilhelm, Fermin J. Serna, Gabriel Campana
Kevin Hamacher and Ron Bowes of the Google Security Team for
finding this.
Fix DoS in DNS. Invalid boundary checks in the
add_pseudoheader function allows a memcpy call with negative
size An attacker which can send malicious DNS queries
to dnsmasq can trigger a DoS remotely.
dnsmasq is vulnerable only if one of the following option is
specified: --add-mac, --add-cpe-id or --add-subnet.
CVE-2017-14496 applies.
Credit to Felix Wilhelm, Fermin J. Serna, Gabriel Campana
Kevin Hamacher and Ron Bowes of the Google Security Team for
finding this.
Fix out-of-memory Dos vulnerability. An attacker which can
send malicious DNS queries to dnsmasq can trigger memory
allocations in the add_pseudoheader function
The allocated memory is never freed which leads to a DoS
through memory exhaustion. dnsmasq is vulnerable only
if one of the following option is specified:
--add-mac, --add-cpe-id or --add-subnet.
CVE-2017-14495 applies.
Credit to Felix Wilhelm, Fermin J. Serna, Gabriel Campana
Kevin Hamacher and Ron Bowes of the Google Security Team for
finding this.
version 2.77 Generate an error when configured with a CNAME loop, rather than a crash. Thanks to George Metz for spotting this problem. Calculate the length of TFTP error reply packet correctly. This fixes a problem when the error message in a TFTP packet exceeds the arbitrary limit of 500 characters. The message was correctly truncated, but not the packet length, so extra data was appended. This is a possible security risk, since the extra data comes from a buffer which is also used for DNS, so that previous DNS queries or replies may be leaked. Fix logic error in Linux netlink code. This could cause dnsmasq to enter a tight loop on systems with a very large number of network interfaces. Fix problem with --dnssec-timestamp whereby receipt of SIGHUP would erroneously engage timestamp checking. Bump zone serial on reloading /etc/hosts and friends when providing authoritative DNS. Handle v4-mapped IPv6 addresses sanely in --synth-domain. These have standard representation like ::ffff:1.2.3.4 and are now converted to names like <prefix>--ffff-1-2-3-4.<domain> Handle binding upstream servers to an interface (--server=1.2.3.4@eth0) when the named interface is destroyed and recreated in the kernel. Allow wildcard CNAME records in authoritative zones. For example --cname=*.example.com,default.example.com more...
Fix build on SunOS with IPv6.
Updated net/dnsmasq to 2.76
---------------------------
version 2.76
Include 0.0.0.0/8 in DNS rebind checks. This range
translates to hosts on the local network, or, at
least, 0.0.0.0 accesses the local host, so could
be targets for DNS rebinding. See RFC 5735 section 3
for details. Thanks to Stephen R旦ttger for the bug report.
Enhance --add-subnet to allow arbitrary subnet addresses.
Thanks to Ed Barsley for the patch.
Respect the --no-resolv flag in inotify code. Fixes bug
which caused dnsmasq to fail to start if a resolv-file
was a dangling symbolic link, even of --no-resolv set.
Thanks to Alexander Kurtz for spotting the problem.
Fix crash when an A or AAAA record is defined locally,
in a hosts file, and an upstream server sends a reply
that the same name is empty. Thanks to Edwin T旦r旦k for
the patch.
Fix failure to correctly calculate cache-size when
reading a hosts-file fails. Thanks to Andr辿 Gl端pker
for the patch.
Fix wrong answer to simple name query when --domain-needed
set, but no upstream servers configured. Dnsmasq returned
REFUSED, in this case, when it should be the same as when
upstream servers are configured - NOERROR. Thanks to
Allain Legacy for spotting the problem.
Return REFUSED when running out of forwarding table slots,
not SERVFAIL.
Add --max-port configuration. Thanks to Hans Dedecker for
the patch.
Add --script-arp and two new functions for the dhcp-script.
These are "arp" and "arp-old" which announce the arrival and
removal of entries in the ARP or nieghbour tables.
Extend --add-mac to allow a new encoding of the MAC address
as base64, by configurting --add-mac=base64
Add --add-cpe-id option.
Don't crash with divide-by-zero if an IPv6 dhcp-range
is declared as a whole /64.
(ie xx::0 to xx::ffff:ffff:ffff:ffff)
Thanks to Laurent Bendel for spotting this problem.
Add support for a TTL parameter in --host-record and
--cname.
Add --dhcp-ttl option.
Add --tftp-mtu option. Thanks to Patrick McLean for the
initial patch.
Check return-code of inet_pton() when parsing dhcp-option.
Bad addresses could fail to generate errors and result in
garbage dhcp-options being sent. Thanks to Marc Branchaud
for spotting this.
Fix wrong value for EDNS UDP packet size when using
--servers-file to define upstream DNS servers. Thanks to
Scott Bonar for the bug report.
Move the dhcp_release and dhcp_lease_time tools from
contrib/wrt to contrib/lease-tools.
Add dhcp_release6 to contrib/lease-tools. Many thanks
to Sergey Nechaev for this code.
To avoid filling logs in configurations which define
many upstream nameservers, don't log more that 30 servers.
The number to be logged can be changed as SERVERS_LOGGED
in src/config.h.
Swap the values if BC_EFI and x86-64_EFI in --pxe-service.
These were previously wrong due to an error in RFC 4578.
If you're using BC_EFI to boot 64-bit EFI machines, you
will need to update your config.
Add ARM32_EFI and ARM64_EFI as valid architectures in
--pxe-service.
Fix PXE booting for UEFI architectures. Modify PXE boot
sequence in this case to force the client to talk to dnsmasq
over port 4011. This makes PXE and especially proxy-DHCP PXE
work with these archictectures.
Workaround problems with UEFI PXE clients. There exist
in the wild PXE clients which have problems with PXE
boot menus. To work around this, when there's a single
--pxe-service which applies to client, then that target
will be booted directly, rather then sending a
single-item boot menu.
Many thanks to Jarek Polok, Michael Kuron and Dreamcat4
for their work on the long-standing UEFI PXE problem.
Subtle change in the semantics of "basename" in
--pxe-service. The historical behaviour has always been
that the actual filename downloaded from the TFTP server
is <basename>.<layer> where <layer> is an integer which
corresponds to the layer parameter supplied by the client.
It's not clear what the function of the "layer"
actually is in the PXE protocol, and in practise layer
is always zero, so the filename is <basename>.0
The new behaviour is the same as the old, except when
<basename> includes a file suffix, in which case
the layer suffix is no longer added. This allows
sensible suffices to be used, rather then the
meaningless ".0". Only in the unlikely event that you
have a config with a basename which already has a
suffix, is this an incompatible change, since the file
downloaded will change from name.suffix.0 to justy
name.suffix
Add SHA512 digests for distfiles for net category Problems found with existing digests: Package haproxy distfile haproxy-1.5.14.tar.gz 159f5beb8fdc6b8059ae51b53dc935d91c0fb51f [recorded] da39a3ee5e6b4b0d3255bfef95601890afd80709 [calculated] Problems found locating distfiles: Package bsddip: missing distfile bsddip-1.02.tar.Z Package citrix_ica: missing distfile citrix_ica-10.6.115659/en.linuxx86.tar.gz Package djbdns: missing distfile djbdns-1.05-test25.diff.bz2 Package djbdns: missing distfile djbdns-cachestats.patch Package djbdns: missing distfile 0002-dnscache-cache-soa-records.patch Package gated: missing distfile gated-3-5-11.tar.gz Package owncloudclient: missing distfile owncloudclient-2.0.2.tar.xz Package poink: missing distfile poink-1.6.tar.gz Package ra-rtsp-proxy: missing distfile rtspd-src-1.0.0.0.tar.gz Package ucspi-ssl: missing distfile ucspi-ssl-0.70-ucspitls-0.1.patch Package waste: missing distfile waste-source.tar.gz Otherwise, existing SHA1 digests verified and found to be the same on the machine holding the existing distfiles (morden). All existing SHA1 digests retained for now as an audit trail.
Update net/dnsmasq to dnsmasq-2.75, based on patches from Benedek Gergely via
pkgsrc-users@.
ok wiz@
pkgsrc changes:
o Pass COPTS via MAKE_FLAGS. This avoid to completely rebuild dnsmasq when dbus
option is selected.
Changes:
version 2.75
Fix reversion on 2.74 which caused 100% CPU use when a
dhcp-script is configured. Thanks to Adrian Davey for
reporting the bug and testing the fix.
version 2.74
Fix reversion in 2.73 where --conf-file would attempt to
read the default file, rather than no file.
Fix inotify code to handle dangling symlinks better and
not SEGV in some circumstances.
DNSSEC fix. In the case of a signed CNAME generated by a
wildcard which pointed to an unsigned domain, the wrong
status would be logged, and some necessary checks omitted.
Update net/dnsmasq to 2.73. Fix build on SunOS. Version 2.73 Fix crash at startup when an empty suffix is supplied to --conf-dir, also trivial memory leak. Thanks to Tomas Hozza for spotting this. Remove floor of 4096 on advertised EDNS0 packet size when DNSSEC in use, the original rationale for this has long gone. Thanks to Anders Kaseorg for spotting this. Use inotify for checking on updates to /etc/resolv.conf and friends under Linux. This fixes race conditions when the files are updated rapidly and saves CPU by noy polling. To build a binary that runs on old Linux kernels without inotify, use make COPTS=-DNO_INOTIFY Fix breakage of --domain=<domain>,<subnet>,local - only reverse queries were intercepted. THis appears to have been broken since 2.69. Thanks to Josh Stone for finding the bug. Eliminate IPv6 privacy addresses and deprecated addresses from the answers given by --interface-name. Note that reverse queries (ie looking for names, given addresses) are not affected. Thanks to Michael Gorbach for the suggestion. Fix crash in DNSSEC code with long RRs. Thanks to Marco Davids for the bug report. Add --ignore-address option. Ignore replies to A-record queries which include the specified address. No error is generated, dnsmasq simply continues to listen for another reply. This is useful to defeat blocking strategies which rely on quickly supplying a forged answer to a DNS request for certain domains, before the correct answer can arrive. Thanks to Glen Huang for the patch. Revisit the part of DNSSEC validation which determines if an unsigned answer is legit, or is in some part of the DNS tree which should be signed. Dnsmasq now works from the DNS root downward looking for the limit of signed delegations, rather than working bottom up. This is both more correct, and less likely to trip over broken nameservers in the unsigned parts of the DNS tree which don't respond well to DNSSEC queries. Add --log-queries=extra option, which makes logs easier to search automatically. Add --min-cache-ttl option. I've resisted this for a long time, on the grounds that disbelieving TTLs is never a good idea, but I've been persuaded that there are sometimes reasons to do it. (Step forward, GFW). To avoid misuse, there's a hard limit on the TTL floor of one hour. Thansk to RinSatsuki for the patch. Cope with multiple interfaces with the same link-local address. (IPv6 addresses are scoped, so this is allowed.) Thanks to Cory Benfield for help with this. Add --dhcp-hostsdir. This allows addition of new host configurations to a running dnsmasq instance much more cheaply than having dnsmasq re-read all its existing configuration each time. Don't reply to DHCPv6 SOLICIT messages if we're not configured to do stateful DHCPv6. Thanks to Win King Wan for the patch. Fix broken DNSSEC validation of ECDSA signatures. Add --dnssec-timestamp option, which provides an automatic way to detect when the system time becomes valid after boot on systems without an RTC, whilst allowing DNS queries before the clock is valid so that NTP can run. Thanks to Kevin Darbyshire-Bryant for developing this idea. Add --tftp-no-fail option. Thanks to Stefan Tomanek for the patch. Fix crash caused by looking up servers.bind, CHAOS text record, when more than about five --servers= lines are in the dnsmasq config. This causes memory corruption which causes a crash later. Thanks to Matt Coddington for sterling work chasing this down. Fix crash on receipt of certain malformed DNS requests. Thanks to Nick Sampanis for spotting the problem. Note that this is could allow the dnsmasq process's memory to be read by an attacker under certain circumstances, so it has a CVE, CVE-2015-3294 Fix crash in authoritative DNS code, if a .arpa zone is declared as authoritative, and then a PTR query which is not to be treated as authoritative arrived. Normally, directly declaring .arpa zone as authoritative is not done, so this crash wouldn't be seen. Instead the relevant .arpa zone should be specified as a subnet in the auth-zone declaration. Thanks to Johnny S. Lee for the bugreport and initial patch. Fix authoritative DNS code to correctly reply to NS and SOA queries for .arpa zones for which we are declared authoritative by means of a subnet in auth-zone. Previously we provided correct answers to PTR queries in such zones (including NS and SOA) but not direct NS and SOA queries. Thanks to Johnny S. Lee for pointing out the problem. Fix logging of DHCPREPLY which should be suppressed by quiet-dhcp6. Thanks to J. Pablo Abonia for spotting the problem. Try and handle net connections with broken fragmentation that lose large UDP packets. If a server times out, reduce the maximum UDP packet size field in the EDNS0 header to 1280 bytes. If it then answers, make that change permanent. Check IPv4-mapped IPv6 addresses when --stop-rebind is active. Thanks to Jordan Milne for spotting this. Allow DHCPv4 options T1 and T2 to be set using --dhcp-option. Thanks to Kevin Benton for patches and work on this. Fix code for DHCPCONFIRM DHCPv6 messages to confirm addresses in the correct subnet, even of not in dynamic address allocation range. Thanks to Steve Hirsch for spotting the problem. Add AddDhcpLease and DeleteDhcpLease DBus methods. Thanks to Nicolas Cavallari for the patch. Allow configuration of router advertisements without the "on-link" bit set. Thanks to Neil Jerram for the patch. Extend --bridge-interface to DHCPv6 and router advertisements. Thanks to Neil Jerram for the patch.
Update 2.67 to 2.72
-------------------
version 2.72
Add ra-advrouter mode, for RFC-3775 mobile IPv6 support.
Add support for "ipsets" in *BSD, using pf. Thanks to
Sven Falempim for the patch.
Fix race condition which could lock up dnsmasq when an
interface goes down and up rapidly. Thanks to Conrad
Kostecki for helping to chase this down.
Add DBus methods SetFilterWin2KOption and SetBogusPrivOption
Thanks to the Smoothwall project for the patch.
Fix failure to build against Nettle-3.0. Thanks to Steven
Barth for spotting this and finding the fix.
When assigning existing DHCP leases to intefaces by comparing
networks, handle the case that two or more interfaces have the
same network part, but different prefix lengths (favour the
longer prefix length.) Thanks to Lung-Pin Chang for the
patch.
Add a mode which detects and removes DNS forwarding loops, ie
a query sent to an upstream server returns as a new query to
dnsmasq, and would therefore be forwarded again, resulting in
a query which loops many times before being dropped. Upstream
servers which loop back are disabled and this event is logged.
Thanks to Smoothwall for their sponsorship of this feature.
Extend --conf-dir to allow filtering of files. So
--conf-dir=/etc/dnsmasq.d,\*.conf
will load all the files in /etc/dnsmasq.d which end in .conf
Fix bug when resulted in NXDOMAIN answers instead of NODATA in
some circumstances.
Fix bug which caused dnsmasq to become unresponsive if it
failed to send packets due to a network interface disappearing.
Thanks to Niels Peen for spotting this.
Fix problem with --local-service option on big-endian platforms
Thanks to Richard Genoud for the patch.
version 2.71
Subtle change to error handling to help DNSSEC validation
when servers fail to provide NODATA answers for
non-existent DS records.
Tweak code which removes DNSSEC records from answers when
not required. Fixes broken answers when additional section
has real records in it. Thanks to Marco Davids for the bug
report.
Fix DNSSEC validation of ANY queries. Thanks to Marco Davids
for spotting that too.
Fix total DNS failure and 100% CPU use if cachesize set to zero,
regression introduced in 2.69. Thanks to James Hunt and
the Ubuntu crowd for assistance in fixing this.
version 2.70
Fix crash, introduced in 2.69, on TCP request when dnsmasq
compiled with DNSSEC support, but running without DNSSEC
enabled. Thanks to Manish Sing for spotting that one.
Fix regression which broke ipset functionality. Thanks to
Wang Jian for the bug report.
version 2.69
Implement dynamic interface discovery on *BSD. This allows
the contructor: syntax to be used in dhcp-range for DHCPv6
on the BSD platform. Thanks to Matthias Andree for
valuable research on how to implement this.
Fix infinite loop associated with some --bogus-nxdomain
configs. Thanks fogobogo for the bug report.
Fix missing RA RDNS option with configuration like
--dhcp-option=option6:23,[::] Thanks to Tsachi Kimeldorfer
for spotting the problem.
Add [fd00::] and [fe80::] as special addresses in DHCPv6
options, analogous to [::]. [fd00::] is replaced with the
actual ULA of the interface on the machine running
dnsmasq, [fe80::] with the link-local address.
Thanks to Tsachi Kimeldorfer for championing this.
DNSSEC validation and caching. Dnsmasq needs to be
compiled with this enabled, with
make dnsmasq COPTS=-DHAVE_DNSSEC
this add dependencies on the nettle crypto library and the
gmp maths library. It's possible to have these linked
statically with
make dnsmasq COPTS='-DHAVE_DNSSEC -DHAVE_DNSSEC_STATIC'
which bloats the dnsmasq binary, but saves the size of
the shared libraries which are much bigger.
To enable, DNSSEC, you will need a set of
trust-anchors. Now that the TLDs are signed, this can be
the keys for the root zone, and for convenience they are
included in trust-anchors.conf in the dnsmasq
distribution. You should of course check that these are
legitimate and up-to-date. So, adding
conf-file=/path/to/trust-anchors.conf
dnssec
to your config is all thats needed to get things
working. The upstream nameservers have to be DNSSEC-capable
too, of course. Many ISP nameservers aren't, but the
Google public nameservers (8.8.8.8 and 8.8.4.4) are.
When DNSSEC is configured, dnsmasq validates any queries
for domains which are signed. Query results which are
bogus are replaced with SERVFAIL replies, and results
which are correctly signed have the AD bit set. In
addition, and just as importantly, dnsmasq supplies
correct DNSSEC information to clients which are doing
their own validation, and caches DNSKEY, DS and RRSIG
records, which significantly improve the performance of
downstream validators. Setting --log-queries will show
DNSSEC in action.
If a domain is returned from an upstream nameserver without
DNSSEC signature, dnsmasq by default trusts this. This
means that for unsigned zone (still the majority) there
is effectively no cost for having DNSSEC enabled. Of course
this allows an attacker to replace a signed record with a
false unsigned record. This is addressed by the
--dnssec-check-unsigned flag, which instructs dnsmasq
to prove that an unsigned record is legitimate, by finding
a secure proof that the zone containing the record is not
signed. Doing this has costs (typically one or two extra
upstream queries). It also has a nasty failure mode if
dnsmasq's upstream nameservers are not DNSSEC capable.
Without --dnssec-check-unsigned using such an upstream
server will simply result in not queries being validated;
with --dnssec-check-unsigned enabled and a
DNSSEC-ignorant upstream server, _all_ queries will fail.
Note that DNSSEC requires that the local time is valid and
accurate, if not then DNSSEC validation will fail. NTP
should be running. This presents a problem for routers
without a battery-backed clock. To set the time needs NTP
to do DNS lookups, but lookups will fail until NTP has run.
To address this, there's a flag, --dnssec-no-timecheck
which disables the time checks (only) in DNSSEC. When dnsmasq
is started and the clock is not synced, this flag should
be used. As soon as the clock is synced, SIGHUP dnsmasq.
The SIGHUP clears the cache of partially-validated data and
resets the no-timecheck flag, so that all DNSSEC checks
henceforward will be complete.
The development of DNSSEC in dnsmasq was started by
Giovanni Bajo, to whom huge thanks are owed. It has been
supported by Comcast, whose techfund grant has allowed for
an invaluable period of full-time work to get it to
a workable state.
Add --rev-server. Thanks to Dave Taht for suggesting this.
Add --servers-file. Allows dynamic update of upstream servers
full access to configuration.
Add --local-service. Accept DNS queries only from hosts
whose address is on a local subnet, ie a subnet for which
an interface exists on the server. This option
only has effect if there are no --interface --except-interface,
--listen-address or --auth-server options. It is intended
to be set as a default on installation, to allow
unconfigured installations to be useful but also safe from
being used for DNS amplification attacks.
Fix crashes in cache_get_cname_target() when dangling CNAMEs
encountered. Thanks to Andy and the rt-n56u project for
find this and helping to chase it down.
Fix wrong RCODE in authoritative DNS replies to PTR queries. The
correct answer was included, but the RCODE was set to NXDOMAIN.
Thanks to Craig McQueen for spotting this.
Make statistics available as DNS queries in the .bind TLD as
well as logging them.
version 2.68
Use random addresses for DHCPv6 temporary address
allocations, instead of algorithmically determined stable
addresses.
Fix bug which meant that the DHCPv6 DUID was not available
in DHCP script runs during the lifetime of the dnsmasq
process which created the DUID de-novo. Once the DUID was
created and stored in the lease file and dnsmasq
restarted, this bug disappeared.
Fix bug introduced in 2.67 which could result in erroneous
NXDOMAIN returns to CNAME queries.
Fix build failures on MacOS X and openBSD.
Allow subnet specifications in --auth-zone to be interface
names as well as address literals. This makes it possible
to configure authoritative DNS when local address ranges
are dynamic and works much better than the previous
work-around which exempted contructed DHCP ranges from the
IP address filtering. As a consequence, that work-around
is removed. Under certain circumstances, this change wil
break existing configuration: if you're relying on the
contructed-range exception, you need to change --auth-zone
to specify the same interface as is used to construct your
DHCP ranges, probably with a trailing "/6" like this:
--auth-zone=example.com,eth0/6 to limit the addresses to
IPv6 addresses of eth0.
Fix problems when advertising deleted IPv6 prefixes. If
the prefix is deleted (rather than replaced), it doesn't
get advertised with zero preferred time. Thanks to Tsachi
for the bug report.
Fix segfault with some locally configured CNAMEs. Thanks
to Andrew Childs for spotting the problem.
Fix memory leak on re-reading /etc/hosts and friends,
introduced in 2.67.
Check the arrival interface of incoming DNS and TFTP
requests via IPv6, even in --bind-interfaces mode. This
isn't possible for IPv4 and can generate scary warnings,
but as it's always possible for IPv6 (the API always
exists) then we should do it always.
Tweak the rules on prefix-lengths in --dhcp-range for
IPv6. The new rule is that the specified prefix length
must be larger than or equal to the prefix length of the
corresponding address on the local interface.
Pullup ticket #4706 - requested by roy
net/dnsmasq: security patch
Revisions pulled up:
- net/dnsmasq/Makefile 1.28,1.27
- net/dnsmasq/distinfo 1.26,1.25
- net/dnsmasq/files/dnsmasq.sh 1.3
- net/dnsmasq/patches/patch-src_bpf.c 1.4
- net/dnsmasq/patches/patch-src_rfc1035.c 1.1
-------------------------------------------------------------------
Module Name: pkgsrc
Committed By: roy
Date: Wed Apr 29 12:53:02 UTC 2015
Modified Files:
pkgsrc/net/dnsmasq: Makefile distinfo
Added Files:
pkgsrc/net/dnsmasq/patches: patch-src_rfc1035.c
Log Message:
Add a patch to fix CVE-2015-3294.
Remove myself as maintainer.
To generate a diff of this commit:
cvs rdiff -u -r1.27 -r1.28 pkgsrc/net/dnsmasq/Makefile
cvs rdiff -u -r1.25 -r1.26 pkgsrc/net/dnsmasq/distinfo
cvs rdiff -u -r0 -r1.1 pkgsrc/net/dnsmasq/patches/patch-src_rfc1035.c
-------------------------------------------------------------------
Module Name: pkgsrc
Committed By: abs
Date: Wed Apr 22 14:57:22 UTC 2015
Modified Files:
pkgsrc/net/dnsmasq: Makefile distinfo
pkgsrc/net/dnsmasq/files: dnsmasq.sh
pkgsrc/net/dnsmasq/patches: patch-src_bpf.c
Log Message:
Add a 'reload' rc.d option (automatically uses the pid file), which will
make dnsmasq reload the dhcp file. Add patch comment and mps
Bump PKGREVISION
To generate a diff of this commit:
cvs rdiff -u -r1.26 -r1.27 pkgsrc/net/dnsmasq/Makefile
cvs rdiff -u -r1.24 -r1.25 pkgsrc/net/dnsmasq/distinfo
cvs rdiff -u -r1.2 -r1.3 pkgsrc/net/dnsmasq/files/dnsmasq.sh
cvs rdiff -u -r1.3 -r1.4 pkgsrc/net/dnsmasq/patches/patch-src_bpf.c
Add a patch to fix CVE-2015-3294. Remove myself as maintainer.
Add a 'reload' rc.d option (automatically uses the pid file), which will make dnsmasq reload the dhcp file. Add patch comment and mps Bump PKGREVISION
Add a patch to unbreak building on Mac OS X. From Sevan Janiyan in PR pkg/49524.
Fix pkglint warnings
user and group "dnsmasq" are created; ++pkgrevision
Update to 2.67
Support partial FQDN option
Update dnsmasq to 2.66. Changes in 2.66 - Add the ability to act as an authoritative DNS server - Add "constructed DHCP ranges" for DHCPv6 - Fix crash on startup on Solaris 11 - Add code to make behaviour for TCP DNS requests when a request arrives for an allowed address, but via a banned interface - Don't send the default DHCP option advertising dnsmasq as the local DNS server if dnsmasq is configured to not act as DNS server, or it's configured to a non-standard port. - Add DNSMASQ_CIRCUIT_ID, DNSMASQ_SUBCRIBER_ID, DNSMASQ_REMOTE_ID variables to the environment of the lease-change script - Fixed crash whilst handling DHCPv6 information-requests - Add --ipset option - Don't erroneously reject some option names in --dhcp-match options - Allow a trailing '*' wildcard in all interface-name configurations - Handle the situation where libc headers define SO_REUSEPORT, but the kernel in use doesn't - Update Polish translation - Fix crash if the configured DHCP lease limit is reached - Update the French translation Changes in 2.65: - Fix regression which broke forwarding of queries sent via TCP which are not for A and AAAA and which were directed to non-default servers - Fix failure to build with DHCP support excluded - Fix nasty regression in 2.64 which completely broke cacheing See full changelog: http://www.thekelleys.org.uk/dnsmasq/CHANGELOG
Pull in fixes from upstream for interface enumeration, fixes segfault on SunOS. Bump PKGREVISION.
Upgrade to dnsmasq-2.64. Highlights include: * SetDomainServers DBUS interface for openresolv * Many DHCPv6 improvements * Don't send a leasetime to DHCP INFORM messages
Update to dnsmsq-2.62 Changes include: DHCPv6 support RA support Many misc fixes
Update to dnsmasq-2.59 When building DBus support, install the config file for DBus Notable Changes from 2.55: IPv6 interface fixes Fixed an invalid server id of 0.0.0.0 being sent in some situations Correctly return NODATA for an AAAA query to a CNAME with only an A Fixed a bug with some truncated TFTP files Support IPv6 scope ids in resolv.conf
Update to dnsmasq-2.55 with the following changes: * Allow the empty domain "." in dhcp domain-search (119) options. * Fix corruption of the domain when a name from /etc/hosts overrides one supplied by a DHCP client. * Fix regression which caused configuration like --address=/.domain.com/1.2.3.4 to be rejected. * Many new options added and improved.
Update to dnsmsasq-2.52 Changes from dnsmasq-2.51 include * More conservative in detecing "A for A" queries * Increased default number of leases to 1000 * Added support for RFC3925 "Vendor-Identifying Vendor Options" * Default DNS packet size now 4096 as recommended by RFC5625
Bump to 2.51 Changes from 2.50 include: * TFTP supports Windows/Dos \ separator. * Warn if IP duplicated in /etc/ethers * Test upstream responsiveness to work around upstream server slowdowns * PXE and relay agent fixes
Pullup ticket #2887 - requested by roy
dnsmasq: security update
Revisions pulled up:
- net/dnsmasq/Makefile 1.12
- net/dnsmasq/distinfo 1.11
---
Module Name: pkgsrc
Committed By: roy
Date: Sat Sep 5 21:16:08 UTC 2009
Modified Files:
pkgsrc/net/dnsmasq: Makefile distinfo
Log Message:
Bump to dnsmasq-2.50
Fixes CVE 2009-2957 and CVE 2009-2958
Bump to dnsmasq-2.50 Fixes CVE 2009-2957 and CVE 2009-2958
Update to dnsmasq-2.49 Changes since 2.47 include * Fix a possible infinite with fixed hostnames to ip and the client sometimes sending one and sometimes not * Improved DHCP logging * addn-hosts now works with a directory instead of just a file
Update to dnsmasq-2.47 Fixes from 2.46 include: * NetBSD-5 support * Better duplicate IPv6 address detection * DBus introspection * work with blank lines in /etc/ethers
Update to dnsmasq-2.46 Noteable changes include: NetBSD-5 support Optional DBus and IPv6 support ISC leasefile support removed Support DHCP clients in multiple DNS domains Re-read /etc/resolv.conf when an "interface up" event occurs
Add missed file in previous commit.
Fix an sa_len problem on NetBSD 5.0. Patch submitted by Roy Marples.
Make it look for it's config file at the right place.
pullup ticket #2456 requested by tonnerre
dnsmasq: update package for fixes and CVE
revisions pulled up:
pkgsrc/net/dnsmasq/Makefile 1.5
pkgsrc/net/dnsmasq/distinfo 1.4
pkgsrc/net/dnsmasq/patches/patch-aa 1.3
Module Name: pkgsrc
Committed By: tonnerre
Date: Wed Jul 23 23:46:08 UTC 2008
Modified Files:
pkgsrc/net/dnsmasq: Makefile distinfo
pkgsrc/net/dnsmasq/patches: patch-aa
Log Message:
Update dnsmasq to version 2.45 in order to fix CVE-2008-1447.
Changes since version 2.38:
- Names ending in a dot now work.
- Whitespaces arround commata in config files are now ignored.
- Asynchronous logging.
- New --log-dhcp flag was added.
- RFC3046 relay agent data matching.
- RFC3993 subscriber ID relay agent data matching.
- RFC 5107 server-id-override DHCP relay agent option.
- Option for interface names added.
- SIGUSR2 now closes and reopens the log files.
- DNS LOC record support.
- Allow disabling the DNS functionality by setting the port to 0.
- DNSMASQ_INTERFACE is now part of the environment of the lease change
script.
- PMTUd disabled on DHCP and TFTP sockets.
- --dhcp-bridge now works on all BSD variants.
- Now including a Solaris 10 SMF.
- Random source ports for DNS queries (CVE-2008-1447).
Update dnsmasq to version 2.45 in order to fix CVE-2008-1447. Changes since version 2.38: - Names ending in a dot now work. - Whitespaces arround commata in config files are now ignored. - Asynchronous logging. - New --log-dhcp flag was added. - RFC3046 relay agent data matching. - RFC3993 subscriber ID relay agent data matching. - RFC 5107 server-id-override DHCP relay agent option. - Option for interface names added. - SIGUSR2 now closes and reopens the log files. - DNS LOC record support. - Allow disabling the DNS functionality by setting the port to 0. - DNSMASQ_INTERFACE is now part of the environment of the lease change script. - PMTUd disabled on DHCP and TFTP sockets. - --dhcp-bridge now works on all BSD variants. - Now including a Solaris 10 SMF. - Random source ports for DNS queries (CVE-2008-1447).
Update to 2.38:
version 2.24
Updated contrib/openvpn/dnsmasq.patch from Joseph Tate.
Tweaked DHCP NAK code, a DHCP NAK is now unicast as a
fallback in cases where a broadcast is futile: namely in
response to a unicast REQUEST from a non-local network
which was not sent via a relay.
Slightly changed the semantics of domain matching in
--server and --address configs. --server=/domain.com/ still
matches domain.com and sub.domain.com but does not
now match newdomain.com The semantics of
--server=/.domain.com/ are unchanged.
Thanks to Chris Blaise for the patch.
Added backwards-compatible internationalisation support.
The existing make targets, (all, dnsmasq, install) work as
before. New ones (all-i18n, and install-i18n) add gettext.
The translations live in po/ There are not too many
strings, so if anybody can provide translations (and for
the manpage....) please send them in.
Tweak behaviour on receipt of REFUSED or SERVFAIL rcodes,
now the query gets retried on all servers before returning
the error to the source of the query. Thanks to Javier
Kohen for the report.
Added Polish translation - thanks to Tomasz Sochanski.
Changed default manpage install location from /usr/man
to /usr/share/man
Added Spanish translation - thanks to Christopher Chatham.
Log a warning when a DHCP packet is truncated due to lack
of space. (Thanks to Michael Welle for the prompt to do
this.)
Added French translation - thanks to Lionel Tricon.
Added Indonesian translation - thanks to Salman AS.
Tweaked the netlink code to cope with interface broadcast
address not set, or set to 0.0.0.0.
Fixed problem assigning fixed addresses to hosts when more
than one dhcp-range is available. Thanks to Sorin Panca
for help chasing this down.
Added more explict error mesages to the hosts file and
ethers file reading code. Markus Kaiserswerth suffered to
make this happen.
Ensure that a hostname supplied by a DHCP client can never
override one configured on the server. Previously, any
host claiming a name would be given it, even if that
over-rode a dhcp-host declaration, leading to potentially
confusing situations.
Added Slackware package-build stuff into contrib/ The i18n
effort broke the current scripts, and working ones were
needed for testing, so they ended up here rather than make
Pat re-invent the wheel.
Added Romanian translation, thanks to Sorin Panca for
that.
version 2.25
Fixed RedHat spec file for FC4 - thanks to Werner Hoelzl
and Andrew Bird.
Fixed Suse spec file - thanks to Steven Springl.
Fixed DHCP bug when two distict subnets are on the same
physical interface. Thanks to Pawel Zawora for finding
this and suggesting the fix.
Added logging to make it explicit when dnsmasq falls back
from using RT-netlink sockets to the old ioctl API for
getting information about interfaces. Doing this
completely silently made remote debugging hard.
Merged uclibc build fixes from the OpenWRT package into
src/config.h
Added Norwegian translation - thanks to Jan Erik Askildt.
version 2.26
Fixed SuSe rpm patch problem - thanks to Steven Springl.
Fixed crash when attempting to send a DHCP NAK to a host
which believes it has a lease on an unknown
network. Thanks to Lutz Pressler for the bug report and
patch.
version 2.27
Tweaked DHCP behaviour when a client attempts to renew a lease
which dnsmasq doesn't know about. Previously that would always
result in a DHCPNAK. Now, in dhcp-authoritative mode, the
lease will be created, if it's legal. This makes dnsmasq work
better if the lease database is lost, for example on an OpenWRT
system which reboots. Thanks to Stephen Rose for work on
this.
Added the ability to support RFC-3442 style destination
descriptors in dhcp-options. This makes classless static
routes easy to do, eg dhcp-option=121,192.168.1.0/24,1.2.3.4
Added error-checking to the code which writes the lease
file. If this fails for any reason, an error is logged,
and a retry occurs after one minute. This should improve
things eg when a filesystem is full. Thanks to Jens Holze
for the bug report.
Fixed breakage of the "/#/ matches any domain" facility
which happened in 2.24. Thanks to Peter Surda for the bug
report.
Use "size_t" and "ssize_t" types where appropriate in the
code.
Fix buggy CNAME handling in mixed IPv4 and IPv6
queries. Thanks to Andreas Pelme for help finding that.
Added some code to attempt to re-transmit DNS queries when
a network interface comes up. This helps on DoD links,
where frequently the packet which triggers dialling is
a DNS query, which then gets lost. By re-sending, we can
avoid the lookup failing. This function is only active
when netlink support is compiled in, and therefore only
under Linux. Thanks to Jean Wolter for help with this.
Tweaked the DHCP tag-matching code to work correctly with
NOT-tag conditions. Thanks to Lutz Pressler for finding
the bug.
Generalised netid-tag matching in dhcp-range statements to
allow more than one tag.
Added --dhcp-mac to do MAC address matching in the same
way as vendorclass and userclass matching. A good
suggestion from Lutz Pressler.
Add workaround for buggy early Microsoft DHCP clients
which need zero-termination in string options.
Thanks to Fabiano Pires for help with this.
Generalised the DHCP code to cope with any hardware
address type, at least on Linux. *BSD is still limited to
ethernet only.
version 2.28
Eliminated all raw network access when running on
Linux. All DHCP network activity now goes through the IP
stack. Packet sockets are no longer required. Apart from
being a neat hack, this should also allow DHCP over IPsec
to work better. On *BSD and OS X, the old method of raw net
access through BPF is retained.
Simplified build options. Networking is now slimmed down
to a choice of "linux" or "other". Netlink is always used
under Linux. Since netlink has been available since 2.2
and non-optional in an IPv4-configured kernel since 2.4,
and the dnsmasq netlink code is now well tested, this
should work out fine.
Removed decayed build support for libc5 and Solaris.
Removed pselect code: use a pipe for race-free signal
handling instead, as this works everywhere.
No longer enable the ISC leasefile reading code in the
distributed sources. I doubt there are many people left
using this 1.x compatibility code. Those that are will
have to explicitly enable it in src/config.h.
Don't send the "DHCP maximum message size" option, even if
requested. RFC2131 says this is a "MUST NOT".
Support larger-than-minimum DHCP message. Dnsmasq is now
happy to get larger than 576-byte DHCP messages, and will
return large messages, if permitted by the "maximum
message size" option of the message to which it is
replying. There's now an arbitrary sanity limit of 16384
bytes.
Added --no-ping option. This fixes an RFC2131 "SHOULD".
Building on the 2.27 MAC-address changes, allow clients to
provide no MAC address at all, relying on the client-id as
a unique identifier. This should make things like DHCP for
USB come easier.
Fixed regression in netlink code under 2.2.x kernels which
occurred in 2.27. Erik Jan Tromp is the vintage kernel fan
who found this. P.S. It looks like this "netlink bind:
permission denied" problem occured in kernels at least as
late a 2.4.18. Good information from Alain Richoux.
Added a warning when it's impossible to give a host its
configured address because the address is leased
elsewhere. A sensible suggestion from Mircea Bardac.
Added minimal support for RFC 3046 DHCP relay agent-id
options. The DHCP server now echoes these back to the
relay, as required by the RFC. Also, RFC 3527 link selection
sub-options are honoured.
Set the process "dumpable" flag when running in debug
mode: this makes getting core dumps from root processes
much easier.
Fixed one-byte buffer overflow which seems to only cause
problems when dnsmasq is linked with uclibc. Thanks to
Eric House and Eric Spakman for help in chasing this down.
Tolerate configuration screwups which lead to the DHCP
server attemping to allocate its own address to a
client; eg setting the whole subnet range as a DHCP
range. Addresses in use by the server are now excluded
from use by clients.
Did some thinking about HAVE_BROKEN_RTC mode, and made it
much simpler and better. The key is to just keep lease
lengths in the lease file. Since these normally never
change, even as the lease is renewed, the lease file never
needs to change except when machines arrive on the network
or leave. This eliminates the code for timed writes, and
reduces the amount of wear on a flash filesystem to the
absolute minimum. Also re-did the basic time function in
this mode to use the portable times(), rather than parsing
/proc/uptime.
Believe the source port number when replying to unicast
DHCP requests and DHCP requests via a relay, instead of always
using the standard ports. This will allow relays on
non-standard ports and DHCPINFORM from unprivileged ports
to work. The source port sent by unconfigured clients is still
ignored, since this may be unreliable. This means that a DHCP
client must use the standard port to do full configuration.
version 2.29
Fixed compilation on OpenBSD (thanks to Tom Hensel for the
report).
Fixed false "no interface" errors when --bind-interfaces is
set along with --interface=lo or --listen-address. Thanks
to Paul Wise for the report.
Updated patch for SuSE rpm. Thanks to Steven Springl.
It turns out that there are some Linux kernel
configurations which make using the capability system
impossible. If this situation occurs then continue, running
as root, and log a warning. Thanks to Scott Wehrenberg
for help tracking this down.
version 2.30
Fixed crash when a DHCP client requested a broadcast
reply. This problem was introduced in version 2.28.
Thanks to Sandra Dekkers for the bug report.
version 2.31
Added --dhcp-script option. There have been calls for this
for a long time from many good people. Fabio Muzzi gets
the prize for finally convincing me.
Added example dbus config file and moved dbus stuff into
its own directory.
Removed horribly outdated Redhat RPM build files. These
are obsolete now that dnsmasq in in Fedora extras. Thanks
to Patrick "Jima" Laughton, the Fedora package
maintainer.
Added workaround for Linux kernel bug. This manifests
itself as failure of DHCP on kernels with "support for
classical IP over ATM" configured. That includes most
Debian kernel packages. Many thanks to A. Costa and
Benjamin Kudria for their huge efforts in chasing this
down.
Force-kill child processes when dnsmasq is sent a sigterm,
otherwise an unclosed TCP connection could keep dnsmasq
hanging round for a few minutes.
Tweaked config.h logic for uclibc build. It will now pick
up MMU and IPV6 status correctly on every system I tested.
version 2.32
Attempt a better job of replacing previous configuration
when re-reading /etc/hosts and /etc/ethers. SIGHUP is
still not identical to a restart under all circumstances,
but it is for the common case of name->MAC address in
/etc/ethers and name->IP address in /etc/hosts.
Fall back to broadcast for DHCP to an unconfigured client
when the MAC address size is greater than 14 bytes.
Fix problem in 2.28-onwards releases which breaks DNS on
Mac OS X. Thanks to Doug Fields for the bug report and
testing.
Added fix to allow compilation on c89-only compilers.
Thanks to John Mastwijk for the patch.
Tweak resolv file polling code to work better if there is
a race between updating the mtime and file contents. This
is not normally a problem, but it can be on systems which
replace nameservers whilst active. The code now continues
to read resolv.conf until it gets at least one usable
server. Thanks to Holger Mauermann for help with this.
If a client DECLINEs an address which is allocated to it
via dhcp-host or /etc/hosts, lock that address out of use
for ten minutes, instead of forever, and log when it's not
being used because of the lock-out. This should provide
less surprising behaviour when a configured address can't be
used. Thanks to Peter Surda and Heinz Deinhart for input
on this.
Fixed *BSD DHCP breakage with only some
arches/compilers, depending on structure padding rules.
Thanks to Jeb Campbell and Tom Hensel for help with this.
Added --conf-dir option. Suggestion from Aaron Tygart.
Applied patch from Brent Cook which allows netids in
dhcp-option configuration lines to be prefixed by
"net:". This is not required by the syntax, but it is
consistent with other configuration items.
Added --log-facility option. Suggestion from Fabio Muzzi.
Major update to Spanish translation. Many thanks to Chris
Chatham.
Fixed gcc-4.1 strict-alias compilation warning.
version 2.33
Remove bash-specific shellcode from the Makefile.
Fix breakage with some DHCP relay implementations which
was introduced in 2.28. Believing the source port in
DHCP requests and sending the reply there is sometimes a
bad thing to do, so I've reverted to always sending to
the relay on port 68. Thanks to Daniel Hamlin and Alex
(alde) for bug reports on this.
Moved the SuSe packaging files to contrib. I will no
longer attempt to maintain this in the source tarball. It
will be done externally, in the same way as packaging for
other distros. Suse packages are available from
ftp://ftp.suse.com/pub/people/ug/
Merged patch from Gentoo to honour $LDFLAGS environment.
Fix bug in resolv.conf processing when more than one file
is being checked.
Add --dns-forward-max option.
Warn if --resolv-file flags are ignored because of
--no-resolv. Thanks to Martin F Krafft for spotting this
one.
Add --leasefile-ro option which allows the use of an
external lease database. Many thanks to Steve Horbachuk
for assistance developing this feature.
Provide extra information to lease-change script via its
environment. If the host has a client-id, then
DNSMASQ_CLIENT_ID will be set. Either the lease length (in
DNSMASQ_LEASE_LENGTH) or lease expiry time (in
DNSMASQ_LEASE_EXPIRES) will be set, depending on the
HAVE_BROKEN_RTC compile-time option. This extra
information should make it possible to maintain the lease
database in external storage such as LDAP or a relational
database. Note that while leasefile-ro is set, the script
will be called with "old" events more often, since
changes to the client-id and lease length
(HAVE_BROKEN_RTC) or lease expiry time (otherwise)
are now flagged.
Add contrib/wrt/* which is an example implementation of an
external persistent lease database for *WRT distros with
the nvram command.
Add contrib/wrt/dhcp_release.c which is a small utility
which removes DHCP leases using DHCPRELEASE operation in
the DHCP protocol.
version 2.34
Tweak network-determination code for another corner case:
in this case a host forced to move between dhcp-ranges on
the same physical interface. Thanks to Matthias Andree.
Improve handling of high DNS loads by throttling acceptance of
new queries when resources are tight. This should be a
better response than the "forwarding table full..."
message which was logged before.
Fixed intermittent infinite loop when re-reading
/etc/ethers after SIGHUP. Thanks to Eldon Ziegler for the
bug report.
Provide extra information to the lease-change script: when
a lease loses its hostname (because a new lease comes
along and claims the same new), the "old" action is called
with the current state of the lease, ie no name. The
change is to provide the former name which the lease had
in the environment variable DNSMASQ_OLD_HOSTNAME. This
helps scripts which do stuff based on hostname, rather
than IP address. Also provide vendor-class and user-class
information to the lease-change script when a new lease is
created in the DNSMASQ_VENDOR_CLASS and
DNSMASQ_USER_CLASS<n> environment variables. Suggestion
from Francois-Xavier Le Bail.
Run the lease change script as root, even when dnsmasq is
configured to change UID to an unprivileged user. Since
most uses of the lease change script need root, this
allows its use whilst keeping the security advantages of
running the daemon without privs. The script is invoked
via a small helper process which keeps root UID, and
validates all data received from the main process. To get
root, an attacker would have to break dnsmasq and then
break the helper through the restricted comms channel
linking the two.
Add contrib/port-forward/* which is a script to set up
port-forwards using the DHCP lease-change script. It's
possible to add a host to a config file by name, and when
that host gets a DHCP lease, the script will use iptables
to set up port-forwards to configured ports at the address
which the host is allocated. The script also handles
setting up the port-forward iptables entries after reboot,
using the persistent lease database, and removing them
when a host leaves and its DHCP lease expires.
Fix unaligned access problem which caused wrong log
messages with some clients on some architectures. Thanks
to Francois-Xavier Le Bail for the bugreport.
Fixed problem with DHCPRELEASE and multi-address
interfaces. Enhanced contrib/wrt/dhcp_release to cope
under these circumstances too. Thanks to Eldon Ziegler for
input on this.
Updated French translation: thanks to Gildas Le Nadan.
Upgraded the name hash function in the DNS cache. Thanks
to Oleg Khovayko for good work on this.
Added --clear-on-reload flag. Suggestion from Johannes
Stezenbach.
Treat a nameserver address of 0.0.0.0 as "nothing". Erwin
Cabrera spotted that specifying a nameserver as 0.0.0.0
breaks things badly; this is because the network stack
treats is as "this host" and an endless loop ensues.
Added Webmin module in contrib/webmin. Thanks to Neil
Fisher for that.
version 2.35
Generate an "old" script event when a client does a DHCPREQUEST
in INIT-REBOOT or SELECTING state and the lease already
exists. Supply vendor and user class information to these
script calls.
Added support for Dragonfly BSD to src/config.h
Removed "Upgrading to 2.0" document, which is ancient
history now.
Tweak DHCP networking code for BSD, esp OpenBSD. Added a
workaround for a bug in OpenBSD 4.0: there should finally
be support for multiple interfaces under OpenBSD now.
Note that no version of dnsmasq before 2.35 will work for
DHCP under OpenBSD 4.0 because of a kernel bug.
Thanks to Claudio Jeker, Jeb Campbell and Cristobal
Palmer for help with this.
Optimised the cache code for the case of large
/etc/hosts. This is mainly to remove the O(n-squared)
algorithm which made reading large (50000 lines) files
slow, but it also takes into account the size of
/etc/hosts when building hash tables, so overall
performance should be better. Thanks to "koko" for
pointing out the problem.
version 2.36
Added --dhcp-ignore-names flag which tells dnsmasq not to
use names provided by DHCP clients. Suggestion from
Thomas M Steenholdt.
Send netmask and broadcast address DHCP options always,
even if the client doesn't request them. This makes a few
odd clients work better.
Added simple TFTP function, optimised for net-boot. It is
now possible to net boot hosts using only dnsmasq. The
TFTP server is read-only, binary-mode only, and designed to be
secure; it adds about 4K to the dnsmasq binary.
Support DHCP option 120, SIP servers, (RFC 3361). Both
encodings are supported, so both --dhcp-option=120,192.168.2.3
and --dhcp-option=120,sip.example.net will work. Brian
Candler pointed out the need for this.
Allow spaces in domain names, to support DNS-SD.
Add --ptr-record flag, again for DNS-SD. Thanks to Stephan
Sokolow for the suggestion.
Tolerate leading space on lines in the config file. Thanks
to Luigi Rizzo for pointing this out.
Fixed netlink.c to cope with headers from the Linux 2.6.19
kernel. Thanks to Philip Wall for the bug report.
Added --dhcp-bridge option, but only to the FreeBSD
build. This fixes an oddity with a a particular bridged
network configuration on FreeBSD. Thanks to Luigi Rizzo
for the patch.
Added FAQ entry about running dnsmasq in a Linux
vserver. Thanks to Gildas le Nadan for the information.
Fixed problem with option parsing which interpreted "/" as
an address and not a string. Thanks to Luigi Rizzo
for the patch.
Ignore the --domain-needed flag when forwarding NS
and SOA queries, since NS queries of TLDs are always legit.
Marcus Better pointed out this problem.
Take care to forward signed DNS requests bit-perfect, so
as not to affect the validity of the signature. This
should allow DDNS updates to be forwarded.
version 2.37
Add better support for RFC-2855 DHCP-over-firewire and RFC
-4390 DHCP-over-InfiniBand. A good suggestion from Karl Svec.
Some efficiency tweaks to the cache code for very large
/etc/hosts files. Should improve reverse (address->name)
lookups and garbage collection. Thanks to Jan 'RedBully'
Seiffert for input on this.
Fix regression in 2.36 which made bogus-nxdomain
and DNS caching unreliable. Thanks to Dennis DeDonatis
and Jan Seiffert for bug reports.
Make DHCP encapsulated vendor-class options sane. Be
warned that some conceivable existing configurations
using these may break, but they work in a much
simpler and more logical way now. Prepending
"vendor:<client-id>" to an option encapsulates it
in option 43, and the option is sent only if the
client-supplied vendor-class substring-matches with
the given client-id. Thanks to Dennis DeDonatis for
help with this.
Apply patch from Jan Seiffert to tidy up tftp.c
Add support for overloading the filename and servername
fields in DHCP packet. This gives extra option-space when
these fields are not being used or with a modern client
which supports moving them into options.
Added a LIMITS section to the man-page, with guidance on
maximum numbers of clients, file sizes and tuning.
release 2.38
Fix compilation on *BSD. Thanks to Tom Hensel.
Don't send length zero DHCP option 43 and cope with
encapsulated options whose total length exceeds 255 octets
by splitting them into multiple option 43 pieces.
Avoid queries being retried forever when --strict-order is
set and an upstream server returns a SERVFAIL
error. Thanks to Johannes Stezenbach for spotting this.
Fix BOOTP support, broken in version 2.37.
Add example dhcp-options for Etherboot.
Add \e (for ASCII ESCape) to the set of valid escapes
in config-file strings.
Added --dhcp-option-force flag and examples in the
configuration file which use this to control PXELinux.
Added --tftp-no-blocksize option.
Set netid tag "bootp" when BOOTP (rather than DHCP) is in
use. This makes it easy to customise which options are
sent to BOOTP clients. (BOOTP allows only 64 octets for
options, so it can be necessary to trim things.)
Fix rare hang in cache code, a 2.37 regression. This
probably needs an infinite DHCP lease and some bad luck to
trigger. Thanks to Detlef Reichelt for bug reports and testing.
Add DragonFly support.
Import dnsmasq from pkgsrc-wip. Packaged by pancake and updated by dhowland. Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP server. It is designed to provide DNS and, optionally, DHCP, to a small network. It can serve the names of local machines which are not in the global DNS. The DHCP server integrates with the DNS server and allows machines with DHCP-allocated addresses to appear in the DNS with names configured either in each host or in a central configuration file. Dnsmasq supports static and dynamic DHCP leases and BOOTP for network booting of diskless machines.
Initial revision