add XXX comment that perhaps we need to recover from short headers.
diff --git a/ospfd/ospf_packet.c b/ospfd/ospf_packet.c
index b4695f4..ea79ee7 100644
--- a/ospfd/ospf_packet.c
+++ b/ospfd/ospf_packet.c
@@ -2046,6 +2046,7 @@
   if (ret != sizeof (iph))
     {
       zlog_warn ("ospf_recv_packet packet smaller than ip header");
+      /* XXX: We peeked, and thus perhaps should discard this packet. */
       return NULL;
     }