K 10
svn:author
V 6
karels
K 8
svn:date
V 27
2017-12-09T17:27:36.704908Z
K 7
svn:log
V 331
gifconfig_gif0 no longer works, document replacement

rc.conf(5) documents the gifconfig_<interface> keyword, which is
no longer implemented. Document the replacement, which works with
cloned_interfaces as well.

Reviewed by:	dab
Group Reviwers:	manpages
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D13130

END