Pull post-4.4BSD change to sys/net/route.c from BSD/OS 4.2.

Have sys/net/route.c:rtrequest1(), which takes ``rt_addrinfo *''
as the argument.  Pass rt_addrinfo all the way down to rtrequest1
and ifa->ifa_rtrequest.  3rd argument of ifa->ifa_rtrequest is now
``rt_addrinfo *'' instead of ``sockaddr *'' (almost noone is
using it anyways).

Benefit: the following command now works.  Previously we needed
two route(8) invocations, "add" then "change".
# route add -inet6 default ::1 -ifp gif0

Remove unsafe typecast in rtrequest(), from ``rtentry *'' to
``sockaddr *''.  It was introduced by 4.3BSD-Reno and never
corrected.

Obtained from:	BSD/OS, NetBSD
MFC after:	1 month
PR:		kern/28360

1 files changed, 2 insertions, 2 deletions

diff --git a/sys/netinet6/nd6.c b/sys/netinet6/nd6.c
index 6fa087a..2dd1758 100644
--- a/sys/netinet6/nd6.c
+++ b/sys/netinet6/nd6.c
@@ -1085,10 +1085,10 @@ nd6_nud_hint(rt, dst6, force)
 }
 
 void
-nd6_rtrequest(req, rt, sa)
+nd6_rtrequest(req, rt, info)
 	int	req;
 	struct rtentry *rt;
-	struct sockaddr *sa; /* xxx unused */
+	struct rt_addrinfo *info; /* xxx unused */
 {
 	struct sockaddr *gate = rt->rt_gateway;
 	struct llinfo_nd6 *ln = (struct llinfo_nd6 *)rt->rt_llinfo;