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, 3 insertions, 3 deletions

diff --git a/sys/net/if_faith.c b/sys/net/if_faith.c
index 1dac1b6..585cf1d 100644
--- a/sys/net/if_faith.c
+++ b/sys/net/if_faith.c
@@ -96,7 +96,7 @@ struct faith_softc {
 static int faithioctl __P((struct ifnet *, u_long, caddr_t));
 int faithoutput __P((struct ifnet *, struct mbuf *, struct sockaddr *,
 	struct rtentry *));
-static void faithrtrequest __P((int, struct rtentry *, struct sockaddr *));
+static void faithrtrequest __P((int, struct rtentry *, struct rt_addrinfo *));
 static int faithprefix __P((struct in6_addr *));
 
 static int faithmodevent __P((module_t, int, void *));
@@ -311,10 +311,10 @@ faithoutput(ifp, m, dst, rt)
 
 /* ARGSUSED */
 static void
-faithrtrequest(cmd, rt, sa)
+faithrtrequest(cmd, rt, info)
 	int cmd;
 	struct rtentry *rt;
-	struct sockaddr *sa;
+	struct rt_addrinfo *info;
 {
 	if (rt) {
 		rt->rt_rmx.rmx_mtu = rt->rt_ifp->if_mtu; /* for ISO */