Apply by doing:
/usr/src
patch -p0 < 007_rtsock.patch
Then build and install a new kernel.
Index: sys/net/rtsock.c
===================================================================
RCS file: /cvs/src/sys/net/rtsock.c,v
retrieving revision 1.105
diff -u -p -r1.105 rtsock.c
--- sys/net/rtsock.c 14 Jul 2010 20:56:35 -0000 1.105
+++ sys/net/rtsock.c 13 Jan 2011 14:59:27 -0000
@@ -820,6 +820,8 @@ flush:
rtm->rtm_flags |= RTF_DONE;
}
}
+ if (dst)
+ route_proto.sp_protocol = dst->sa_family;
if (rt)
rtfree(rt);
@@ -838,8 +840,6 @@ flush:
}
if (rp)
rp->rcb_proto.sp_family = 0; /* Avoid us */
- if (dst)
- route_proto.sp_protocol = dst->sa_family;
if (rtm) {
m_copyback(m, 0, rtm->rtm_msglen, rtm, M_NOWAIT);
if (m->m_pkthdr.len < rtm->rtm_msglen) {