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Diff for /src/share/man/man7/sysctl.7 between version 1.71 and 1.75

version 1.71, 2012/06/09 08:22:14 version 1.75, 2013/04/10 00:20:14
Line 29 
Line 29 
 .\"  .\"
 .\"     @(#)sysctl.3    8.4 (Berkeley) 5/9/95  .\"     @(#)sysctl.3    8.4 (Berkeley) 5/9/95
 .\"  .\"
 .Dd June 8, 2012  .Dd April 9, 2013
 .Dt SYSCTL 7  .Dt SYSCTL 7
 .Os  .Os
 .Sh NAME  .Sh NAME
Line 1223  The currently defined protocols and name
Line 1223  The currently defined protocols and name
 .It icmp        redirtimeout    integer yes  .It icmp        redirtimeout    integer yes
 .It icmp        bmcastecho      integer yes  .It icmp        bmcastecho      integer yes
 .It ip  allowsrcrt      integer yes  .It ip  allowsrcrt      integer yes
   .It ip  anonportalgo.selected   string  yes
   .It ip  anonportalgo.available  string  yes
   .It ip  anonportalgo.reserve    struct  yes
 .It ip  anonportmax     integer yes  .It ip  anonportmax     integer yes
 .It ip  anonportmin     integer yes  .It ip  anonportmin     integer yes
 .It ip  checkinterface  integer yes  .It ip  checkinterface  integer yes
Line 1282  The currently defined protocols and name
Line 1285  The currently defined protocols and name
 .It udp checksum        integer yes  .It udp checksum        integer yes
 .It udp do_loopback_cksum       integer yes  .It udp do_loopback_cksum       integer yes
 .It udp recvspace       integer yes  .It udp recvspace       integer yes
 .It udp rfc6056.selected        string  yes  
 .It udp rfc6056.available       string  yes  
 .It udp sendspace       integer yes  .It udp sendspace       integer yes
 .El  .El
 .Pp  .Pp
Line 1327  believes it can send advertisements more
Line 1328  believes it can send advertisements more
 Disabled by default.  Disabled by default.
 .It Li ip.allowsrcrt  .It Li ip.allowsrcrt
 If set to 1, the host accepts source routed packets.  If set to 1, the host accepts source routed packets.
   .It Li ip.anonportalgo.available
   The available RFC 6056 port randomization algorithms.
   .It Li ip.anonportalgo.reserve
   A bitmask of ports that will not be used during anonymous or privileged
   port selection.
   .It Li ip.anonportalgo.selected
   The currently selected RFC 6056 port randomization algorithm.
 .It Li ip.anonportmax  .It Li ip.anonportmax
 The highest port number to use for TCP and UDP ephemeral port allocation.  The highest port number to use for TCP and UDP ephemeral port allocation.
 This cannot be set to less than 1024 or greater than 65535, and must  This cannot be set to less than 1024 or greater than 65535, and must
Line 1463  Number of ticks to delay sending an ACK.
Line 1471  Number of ticks to delay sending an ACK.
 .It Li tcp.do_loopback_cksum  .It Li tcp.do_loopback_cksum
 Perform TCP checksum on loopback.  Perform TCP checksum on loopback.
 .It Li tcp.init_win  .It Li tcp.init_win
 A value indicating the TCP initial congestion window.  A value indicating the TCP initial congestion window. The valid range
 If this value is 0, an auto-tuning algorithm designed to use an initial  is 0 to 10 (maximum specified by draft-ietf-tcpm-initcwnd-08.txt),
 window of approximately 4K bytes is in use.  with a default of 4 (approximately 4K per RFC3390).
 Otherwise, this value indicates a fixed number of packets.  
 .It Li tcp.init_win_local  .It Li tcp.init_win_local
 Like  Like
 .Li tcp.init_win ,  .Li tcp.init_win ,
Line 1565  Received non-zero UDP checksums are alwa
Line 1572  Received non-zero UDP checksums are alwa
 Disabling UDP checksums is strongly discouraged.  Disabling UDP checksums is strongly discouraged.
 .It Li udp.recvspace  .It Li udp.recvspace
 The default UDP receive buffer size.  The default UDP receive buffer size.
 .It Li udp.rfc6056.available  
 The available RFC 6056 port randomization algorithms.  
 .It Li udp.rfc6056.selected  
 The currently selected RFC 6056 port randomization algorithm.  
 .It Li udp.sendspace  .It Li udp.sendspace
 The default UDP send buffer size.  The default UDP send buffer size.
 .El  .El
Line 1597  The currently defined protocols and name
Line 1600  The currently defined protocols and name
 .It icmp6       rediraccept     integer yes  .It icmp6       rediraccept     integer yes
 .It icmp6       redirtimeout    integer yes  .It icmp6       redirtimeout    integer yes
 .It ip6 accept_rtadv    integer yes  .It ip6 accept_rtadv    integer yes
   .It ip6 anonportalgo.selected   string  yes
   .It ip6 anonportalgo.available  string  yes
   .It ip6 anonportalgo.reserve    struct  yes
 .It ip6 anonportmax     integer yes  .It ip6 anonportmax     integer yes
 .It ip6 anonportmin     integer yes  .It ip6 anonportmin     integer yes
 .It ip6 auto_flowlabel  integer yes  .It ip6 auto_flowlabel  integer yes
Line 1612  The currently defined protocols and name
Line 1618  The currently defined protocols and name
 .It ip6 log_interval    integer yes  .It ip6 log_interval    integer yes
 .It ip6 lowportmax      integer yes  .It ip6 lowportmax      integer yes
 .It ip6 lowportmin      integer yes  .It ip6 lowportmin      integer yes
   .It ip6 maxdynroutes    integer yes
   .It ip6 maxifprefixes   integer yes
   .It ip6 maxifdefrouters integer yes
 .It ip6 maxflows        integer yes  .It ip6 maxflows        integer yes
 .It ip6 maxfragpackets  integer yes  .It ip6 maxfragpackets  integer yes
 .It ip6 maxfrags        integer yes  .It ip6 maxfrags        integer yes
   .It ip6 neighborgcthresh        integer yes
 .It ip6 redirect        integer yes  .It ip6 redirect        integer yes
 .It ip6 rr_prune        integer yes  .It ip6 rr_prune        integer yes
 .It ip6 use_deprecated  integer yes  .It ip6 use_deprecated  integer yes
 .It ip6 v6only  integer yes  .It ip6 v6only  integer yes
 .It udp6        do_loopback_cksum       integer yes  .It udp6        do_loopback_cksum       integer yes
 .It udp6        recvspace       integer yes  .It udp6        recvspace       integer yes
 .It udp6        rfc6056.selected        string  yes  
 .It udp6        rfc6056.available       string  yes  
 .It udp6        sendspace       integer yes  .It udp6        sendspace       integer yes
 .El  .El
 .Pp  .Pp
Line 1634  and autoconfigures address prefixes and 
Line 1642  and autoconfigures address prefixes and 
 The node must be a host  The node must be a host
 .Pq not a router  .Pq not a router
 for the option to be meaningful.  for the option to be meaningful.
   .It Li ip6.anonportalgo.available
   The available RFC 6056 port randomization algorithms.
   .It Li ip6.anonportalgo.reserve
   A bitmask of ports that will not be used during anonymous or privileged
   port selection.
   .It Li ip6.anonportalgo.selected
   The currently selected RFC 6056 port randomization algorithm.
 .It Li ip6.anonportmax  .It Li ip6.anonportmax
 The highest port number to use for TCP and UDP ephemeral port allocation.  The highest port number to use for TCP and UDP ephemeral port allocation.
 This cannot be set to less than 1024 or greater than 65535, and must  This cannot be set to less than 1024 or greater than 65535, and must
Line 1711  The lowest port number to use for TCP an
Line 1726  The lowest port number to use for TCP an
 This cannot be set to less than 0 or greater than 1024, and must  This cannot be set to less than 0 or greater than 1024, and must
 be smaller than  be smaller than
 .Li ip6.lowportmax .  .Li ip6.lowportmax .
   .It Li ip6.maxdynroutes
   Maximum number of routes created by redirect.
   Set it to negative to disable.
   The default value is 4096.
   .It Li ip6.maxifprefixes
   Maximum number of prefixes created by route advertisements per interface.
   Set it to negative to disable.
   The default value is 16.
   .It Li ip6.maxifdefrouters 16
   Maximum number of default routers created by route advertisements per interface.
   Set it to negative to disable.
   The default value is 16.
 .It Li ip6.maxflows  .It Li ip6.maxflows
 IPv6 Fast Forwarding is enabled by default.  IPv6 Fast Forwarding is enabled by default.
 If set to 0, IPv6 Fast Forwarding is disabled.  If set to 0, IPv6 Fast Forwarding is disabled.
Line 1727  The maximum number of fragments the node
Line 1754  The maximum number of fragments the node
 0 means that the node will not accept any fragments.  0 means that the node will not accept any fragments.
 \-1 means that the node will accept as many fragments as it receives.  \-1 means that the node will accept as many fragments as it receives.
 The flag is provided basically for avoiding possible DoS attacks.  The flag is provided basically for avoiding possible DoS attacks.
   .It Li ip6.neighborgcthresh
   Maximum number of entries in neighbor cache.
   Set to negative to disable.
   The default value is 2048.
 .It Li ip6.redirect  .It Li ip6.redirect
 If set to 1, ICMPv6 redirects may be sent by the node.  If set to 1, ICMPv6 redirects may be sent by the node.
 This option is ignored unless the node is routing IP packets,  This option is ignored unless the node is routing IP packets,
Line 1830  ICMPv6 redirect.
Line 1861  ICMPv6 redirect.
 Perform UDP checksum on loopback.  Perform UDP checksum on loopback.
 .It Li udp6.recvspace  .It Li udp6.recvspace
 Default UDP receive buffer size.  Default UDP receive buffer size.
 .It Li udp6.rfc6056.available  
 The available RFC 6056 port randomization algorithms for IPv6.  
 .It Li udp6.rfc6056.selected  
 The currently selected RFC 6056 port randomization algorithm for IPv6.  
 .It Li udp6.sendspace  .It Li udp6.sendspace
 Default UDP send buffer size.  Default UDP send buffer size.
 .El  .El

Legend:
Removed from v.1.71  
changed lines
  Added in v.1.75

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