Comment update.

diff --git a/proto/ospf/rt.c b/proto/ospf/rt.c
index 8332ffaddffc6fec57888a69543e9976f41004da..944d0e53e5cd7058d8c498e05fd6811836ff679d 100644 (file)
--- a/proto/ospf/rt.c
+++ b/proto/ospf/rt.c
@@ -340,7 +340,12 @@ ospf_rt_spfa_rtlinks(struct ospf_area *oa, struct top_hash_entry *act, struct to
        {
 #ifdef OSPFv2
        case LSART_STUB:
-         /* This violates RFC 2328! But it is mostly harmless. */
+         /*
+          * RFC 2328 in 16.1. (2a) says to handle stub networks in an
+          * second phase after the SPF for an area is calculated. We get
+          * the same result by handing them here because add_network()
+          * will keep the best (not the first) found route.
+          */
          add_network(oa, ipa_from_u32(rtl->id),
                      ipa_mklen(ipa_from_u32(rtl->data)),
                      act->dist + rtl->metric, act);