K 10
svn:author
V 6
kevans
K 8
svn:date
V 27
2019-03-14T17:18:00.750378Z
K 7
svn:log
V 315
ether: centralize fake hwaddr generation

We currently have two places with identical fake hwaddr generation --
if_vxlan and if_bridge. Lift it into if_ethersubr for reuse in other
interfaces that may also need a fake addr.

Reviewed by:	bryanv, kp, philip
Differential Revision:	https://reviews.freebsd.org/D19573

END