2.6.6 got too picky about multiple interfaces with the same
address. This patch has been already integrated for later releases.
diff -Nru a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
--- a/net/bridge/br_fdb.c Mon May 10 13:45:50 2004
+++ b/net/bridge/br_fdb.c Mon May 10 13:45:50 2004
@@ -277,18 +277,18 @@
if (!memcmp(fdb->addr.addr, addr, ETH_ALEN)) {
/* attempt to update an entry for a local interface */
if (unlikely(fdb->is_local)) {
- if (is_local)
- printk(KERN_INFO "%s: attempt to add"
- " interface with same source address.\n",
- source->dev->name);
- else if (net_ratelimit())
- printk(KERN_WARNING "%s: received packet with "
- " own address as source address\n",
- source->dev->name);
- ret = -EEXIST;
+ /* it is okay to have multiple ports with same
+ * address, just don't allow to be spoofed.
+ */
+ if (!is_local) {
+ if (net_ratelimit())
+ printk(KERN_WARNING "%s: received packet with "
+ " own address as source address\n",
+ source->dev->name);
+ ret = -EEXIST;
+ }
goto out;
}
-
if (likely(!fdb->is_static || is_local)) {
/* move to end of age list */
