From fe8ad0db1bc8654b87a8c70f381810288cc71e26 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 e89b2573c..e674881bc 100644
--- a/lib/learning-switch.c
+++ b/lib/learning-switch.c
@@ -417,6 +417,10 @@ 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;
-- 
2.47.0