Author: eugen
Date: Mon Jun 22 17:52:13 2020
New Revision: 362503
URL: https://svnweb.freebsd.org/changeset/base/362503

Log:
  Followup to r362502: rc.conf(5): unobsolete gif_interfaces
  
  There are cases when gif_interfaces cannot be replaced
  with cloned_interfaces, such as tunnels with external IPv6 addresses
  and internal IPv4 or vice versa. Such configuration requires
  extra invocation of ifconfig(8) and supported with gif_interfaces only.
  
  Fix manual page and provide some examples.
  
  MFC after:    1 week
  X-MFC-With:   362502

Modified:
  head/share/man/man5/rc.conf.5

Modified: head/share/man/man5/rc.conf.5
==============================================================================
--- head/share/man/man5/rc.conf.5       Mon Jun 22 17:25:21 2020        
(r362502)
+++ head/share/man/man5/rc.conf.5       Mon Jun 22 17:52:13 2020        
(r362503)
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd June 8, 2020
+.Dd June 23, 2020
 .Dt RC.CONF 5
 .Os
 .Sh NAME
@@ -1862,46 +1862,35 @@ Even if this variable is specified to
 .Dq :nosticky
 keyword can be used to override it on per interface basis.
 .It Va gif_interfaces
-.Pq Vt str
-This variable is deprecated in favor of
-.Va cloned_interfaces .
 Set to the list of
 .Xr gif 4
 tunnel interfaces to configure on this host.
-For each
-.Xr gif
-tunnel interface, set a variable named
-.Va ifconfig_ Ns Aq Ar interface
-with the parameters for the
-.Xr ifconfig 8
-command to configure the link level for
-.Ar interface
-with the
-.Cm tunnel
-option.
+A
+.Va gifconfig_ Ns Aq Ar interface
+variable is assumed to exist for each value of
+.Ar interface .
 The value of this variable is used to configure the link layer of the
 tunnel using the
 .Cm tunnel
 option to
 .Xr ifconfig .
+Additionally, this option ensures that each listed interface is created
+via the
+.Cm create
+option to
+.Xr ifconfig
+before attempting to configure it.
+.Pp
 For example, configure two
 .Xr gif
 interfaces with:
-.Bd -literal -offset indent
+.Bd -literal
 gif_interfaces="gif0 gif1"
-ifconfig_gif0="tunnel src_addr0 dst_addr0"
-ifconfig_gif1="tunnel src_addr1 dst_addr1"
+gifconfig_gif0="100.64.0.1 100.64.0.2"
+ifconfig_gif0="inet 10.0.0.1 10.0.0.2 netmask 255.255.255.252"
+gifconfig_gif1="inet6 2a00::1 2a01::1"
+ifconfig_gif1="inet 10.1.0.1 10.1.0.2 netmask 255.255.255.252"
 .Ed
-.Pp
-Additionally, this option ensures that each listed interface is created
-via the
-.Cm create
-option to
-.Xr ifconfig .
-This example also works with
-.Va cloned_interfaces
-instead of
-.Va gif_interfaces .
 .It Va sppp_interfaces
 .Pq Vt str
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