K 10
svn:author
V 8
melifaro
K 8
svn:date
V 27
2014-01-16T11:50:00.928524Z
K 7
svn:log
V 501
Fix ipfw fwd for IPv4 traffic broken by r249894.

Problem case:
Original lookup returns route with GW set, so gw points to
rte->rt_gateway.
After that we're changing dst and performing lookup another time.
Since fwd host is most probably directly reachable, resulting
rte does not contain rt_gateway, so gw is not set. Finally, we
end with packet transmitted to proper interface but wrong
link-layer address.

Found by:	lstewart
Discussed with:	ae,lstewart
MFC after:	2 weeks
Sponsored by:	Yandex LLC

END