From ac6abda9719bb8b87ad9179534d8c005f56ea8af Mon Sep 17 00:00:00 2001
From: Ben Pfaff <blp@nicira.com>
Date: Mon, 5 Jan 2009 16:00:19 -0800
Subject: [PATCH] Do not forward multicast addresses that must not be, in
 learning-switch.

---
 lib/learning-switch.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/learning-switch.c b/lib/learning-switch.c
index bd7da226..c53ff39e 100644
--- a/lib/learning-switch.c
+++ b/lib/learning-switch.c
@@ -425,6 +425,10 @@ process_packet_in(struct lswitch *sw, struct rconn *rconn, void *opi_)
         }
     }
 
+    if (eth_addr_is_reserved(flow.dl_src)) {
+        goto drop_it;
+    }
+
     if (!may_recv(sw, in_port, false)) {
         /* STP prevents receiving anything on this port. */
         goto drop_it;
-- 
2.30.2