semarie@ found that rtadvd(8) is printing the following messages with an
ART-enabled kernel:
"rtadvd[43548]: new interface route's plen 128 is invalid for a prefix"
This is due to the prefix length to mask conversion code. Previously
the RTAX_NETMASK argument of a routing message was NULL for every host
route. With ART it contains a mask of the size of the address.
Diff below fixes that, ok?
Index: net/route.c
===================================================================
RCS file: /cvs/src/sys/net/route.c,v
retrieving revision 1.296
diff -u -p -r1.296 route.c
--- net/route.c 7 Mar 2016 18:44:00 -0000 1.296
+++ net/route.c 26 Mar 2016 10:15:01 -0000
@@ -480,7 +480,8 @@ rt_sendmsg(struct rtentry *rt, int cmd,
memset(&info, 0, sizeof(info));
info.rti_info[RTAX_DST] = rt_key(rt);
info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
- info.rti_info[RTAX_NETMASK] = rt_plen2mask(rt, &sa_mask);
+ if (!ISSET(rt->rt_flags, RTF_HOST))
+ info.rti_info[RTAX_NETMASK] = rt_plen2mask(rt, &sa_mask);
info.rti_info[RTAX_LABEL] = rtlabel_id2sa(rt->rt_labelid, &sa_rl);
ifp = if_get(rt->rt_ifidx);
if (ifp != NULL) {
