Adjust comment to make it clear that a NULL nexthop is actually eligable

diff --git a/usr.sbin/bgpd/rde_decide.c b/usr.sbin/bgpd/rde_decide.c
index a912cac..04f09a1 100644 (file)
--- a/usr.sbin/bgpd/rde_decide.c
+++ b/usr.sbin/bgpd/rde_decide.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: rde_decide.c,v 1.70 2018/08/06 08:06:49 claudio Exp $ */
+/*     $OpenBSD: rde_decide.c,v 1.71 2018/08/29 08:51:49 claudio Exp $ */
 
 /*
  * Copyright (c) 2003, 2004 Claudio Jeker <claudio@openbsd.org>
@@ -137,7 +137,11 @@ prefix_cmp(struct prefix *p1, struct prefix *p2)
        if (asp2->flags & F_ATTR_LOOP)
                return (1);
 
-       /* 1. check if prefix is eligible a.k.a reachable */
+       /*
+        * 1. check if prefix is eligible a.k.a reachable
+        *    A NULL nexthop is eligible since it is used for locally
+        *    announced networks.
+        */
        if (prefix_nexthop(p2) != NULL &&
            prefix_nexthop(p2)->state != NEXTHOP_REACH)
                return (1);