For IPv6 pass prefix not nexthop as network for connected nexthops ba…

…ck to

the RDE so that the code actually works.
Problem found and reported by Pier Carlo Chiodi (pierky at pierky com)
OK deraadt@

usr.sbin/bgpd/kroute.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: kroute.c,v 1.211 2017/01/24 04:22:42 benno Exp $ */
+/*	$OpenBSD: kroute.c,v 1.212 2017/03/28 05:04:09 claudio Exp $ */
 
 /*
  * Copyright (c) 2003, 2004 Henning Brauer <[email protected]>
@@ -2200,9 +2200,10 @@ knexthop_send_update(struct knexthop_node *kn)
 		kr = kn->kroute;
 		n.valid = kroute_validate(&kr->r);
 		n.connected = kr->r.flags & F_CONNECTED;
-		if ((n.gateway.v4.s_addr =
-		    kr->r.nexthop.s_addr) != 0)
+		if (kr->r.nexthop.s_addr != 0) {
 			n.gateway.aid = AID_INET;
+			n.gateway.v4.s_addr = kr->r.nexthop.s_addr;
+		}
 		if (n.connected) {
 			n.net.aid = AID_INET;
 			n.net.v4.s_addr = kr->r.prefix.s_addr;
@@ -2221,7 +2222,7 @@ knexthop_send_update(struct knexthop_node *kn)
 		}
 		if (n.connected) {
 			n.net.aid = AID_INET6;
-			memcpy(&n.net.v6, &kr6->r.nexthop,
+			memcpy(&n.net.v6, &kr6->r.prefix,
 			    sizeof(struct in6_addr));
 			n.netlen = kr6->r.prefixlen;
 		}