Hello, I manage a number of servers all running 2.4 (same problem exists with 2.6). My problem is that since a few bridge versions ago, I've had to modify net/bridge/br_fdb.c in the br_fdb_insert() function -- to get rid of the checks that produce this error: Jan 16 10:35:31 host15 kernel: tap_0: received packet with own address as source address Jan 16 10:35:33 host15 kernel: tap_0: received packet with own address as source address My specific setup is: br0 assigned an IP, with eth0 added to the bridge with no IP. I create tap devices, assign them no IP address but a unique MAC. On the other end of each tap device is an UML virtual machine's eth0. My machines are SuperMicro 6013 dual xeon boxes with e1000, and a 5012 box with e100 NICs. I don't believe this is a checksum issue raised a while back. STP is off. Settings for setfd and sethello make no difference. As soon as UML brings up its eth0 interface, the messages appear. I'm really not a kernel hacker, but I was able to look at previous versions of the file and more or less just comment out the "if (unlikely(fdb->is_local))" statement. This is what I've been using for the past few months. It seems to work as it did before this new check was put in place. But, I still have a problem where showmacs displays this for each tap interface: 2 fe:fd:45:38:ad:f1 no 4.88 2 fe:fd:45:38:ad:f1 yes 0.00 Two entries for the same interface -- a local, non-expiring fdb entry, and a non-local expiring fdb entry. Once the non-local fdb entry times out, the tap loses connectivity from the world. If I log into the host machine locally and ping an IP on the TAP interface, it comes back alive. Same goes for logging into the UML's console and pinging the host. I've had this problem even with the older bridge code. I think all this is related to the real problem. Looks like something isn't detecting traffic as local, or perhaps it needs special handling for this case? Others have been using the identical bridge setup, minus the e100/1000 cards, and haven't reported either of these problems. Any advice would be appreciated. Regards, -Chris
