Process SPANS ARP requests even if source IP is 0.0.0.0 (or broadcast). This

can occur when talking to a Fore host which is using "bonded" interfaces.

1 files changed, 12 insertions, 7 deletions

diff --git a/sys/netatm/spans/spans_arp.c b/sys/netatm/spans/spans_arp.c
index 0c445ae..f206b09 100644
--- a/sys/netatm/spans/spans_arp.c
+++ b/sys/netatm/spans/spans_arp.c
@@ -620,17 +620,11 @@ spansarp_input(clp, m)
 
 	/*
 	 * Validate source addresses
-	 * 	can't be from broadcast
+	 * 	can't be from hardware broadcast
 	 *	can't be from me
 	 */
 	if (!spans_addr_cmp(&ahp->ah_sha, &spans_bcastaddr))
 		goto free;
-#if (defined(BSD) && (BSD >= 199306))
-	if (in_broadcast(in_src, &inp->inf_nif->nif_if))
-#else
-	if (in_broadcast(in_src))
-#endif
-		goto free;
 	if (!spans_addr_cmp(&ahp->ah_sha, spp->sp_addr.address))
 		goto free;
 	if (in_src.s_addr == in_me.s_addr) {
@@ -642,6 +636,17 @@ spansarp_input(clp, m)
 	}
 
 	/*
+	 * If source IP address is from unspecified or broadcast addresses,
+	 * don't bother updating arp table, but answer possible requests
+	 */
+#if (defined(BSD) && (BSD >= 199306))
+	if (in_broadcast(in_src, &inp->inf_nif->nif_if))
+#else
+	if (in_broadcast(in_src))
+#endif
+		goto chkop;
+
+	/*
 	 * Update arp table with source address info
 	 */
 	s = splnet();