svn commit: r230578 - head/share/man/man4

[Gleb Smirnoff]

Author: glebius
Date: Thu Jan 26 10:48:17 2012
New Revision: 230578
URL: http://svn.freebsd.org/changeset/base/230578

Log:
  Remove a commented out old block inherited from inet.4. The
  text there was so much outdated that it required a complete
  rewrite even for inet.4, not mentioning inet6.4. There is
  no reason to keep it in the manual page.

Modified:
  head/share/man/man4/inet6.4

Modified: head/share/man/man4/inet6.4
==============================================================================
--- head/share/man/man4/inet6.4	Thu Jan 26 10:43:40 2012	(r230577)
+++ head/share/man/man4/inet6.4	Thu Jan 26 10:48:17 2012	(r230578)
@@ -184,86 +184,6 @@ by creating an Internet socket of type
 The
 .Tn ICMPv6
 message protocol is accessible from a raw socket.
-.\" .Pp
-.\" The 128-bit IPv6 address contains both network and host parts.
-.\" However, direct examination of addresses is discouraged.
-.\" For those programs which absolutely need to break addresses
-.\" into their component parts, the following
-.\" .Xr ioctl 2
-.\" commands are provided for a datagram socket in the
-.\" .Nm
-.\" domain; they have the same form as the
-.\" .Dv SIOCIFADDR
-.\" command (see
-.\" .Xr intro 4 ) .
-.\" .Pp
-.\" .Bl -tag -width SIOCSIFNETMASK
-.\" .It Dv SIOCSIFNETMASK
-.\" Set interface network mask.
-.\" The network mask defines the network part of the address;
-.\" if it contains more of the address than the address type would indicate,
-.\" then subnets are in use.
-.\" .It Dv SIOCGIFNETMASK
-.\" Get interface network mask.
-.\" .El
-.\" .Sh ROUTING
-.\" The current implementation of Internet protocols includes some routing-table
-.\" adaptations to provide enhanced caching of certain end-to-end
-.\" information necessary for Transaction TCP and Path MTU Discovery.  The
-.\" following changes are the most significant:
-.\" .Bl -enum
-.\" .It
-.\" All IP routes, except those with the
-.\" .Dv RTF_CLONING
-.\" flag and those to multicast destinations, have the
-.\" .Dv RTF_PRCLONING
-.\" flag forcibly enabled (they are thus said to be
-.\" .Dq "protocol cloning" ).
-.\" .It
-.\" When the last reference to an IP route is dropped, the route is
-.\" examined to determine if it was created by cloning such a route.  If
-.\" this is the case, the
-.\" .Dv RTF_PROTO3
-.\" flag is turned on, and the expiration timer is initialized to go off
-.\" in net.inet.ip.rtexpire seconds.  If such a route is re-referenced,
-.\" the flag and expiration timer are reset.
-.\" .It
-.\" A kernel timeout runs once every ten minutes, or sooner if there are
-.\" soon-to-expire routes in the kernel routing table, and deletes the
-.\" expired routes.
-.\" .El
-.\" .Pp
-.\" A dynamic process is in place to modify the value of
-.\" net.inet.ip.rtexpire if the number of cached routes grows too large.
-.\" If after an expiration run there are still more than
-.\" net.inet.ip.rtmaxcache unreferenced routes remaining, the rtexpire
-.\" value is multiplied by 3/4, and any routes which have longer
-.\" expiration times have those times adjusted.  This process is damped
-.\" somewhat by specification of a minimum rtexpire value
-.\" (net.inet.ip.rtminexpire), and by restricting the reduction to once in
-.\" a ten-minute period.
-.\" .Pp
-.\" If some external process deletes the original route from which a
-.\" protocol-cloned route was generated, the ``child route'' is deleted.
-.\" (This is actually a generic mechanism in the routing code support for
-.\" protocol-requested cloning.)
-.\" .Pp
-.\" No attempt is made to manage routes which were not created by protocol
-.\" cloning; these are assumed to be static, under the management of an
-.\" external routing process, or under the management of a link layer
-.\" (e.g.,
-.\" .Tn ARP
-.\" for Ethernets).
-.\" .Pp
-.\" Only certain types of network activity will result in the cloning of a
-.\" route using this mechanism.  Specifically, those protocols (such as
-.\" .Tn TCP
-.\" and
-.\" .Tn UDP )
-.\" which themselves cache a long-lasting reference to route for a destination
-.\" will trigger the mechanism; whereas raw
-.\" .Tn IP
-.\" packets, whether locally-generated or forwarded, will not.
 .Ss MIB Variables
 A number of variables are implemented in the net.inet6 branch of the
 .Xr sysctl 3