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Hi, i am currently trying to code a little netfilter plugin, to be placed into the bridge forwarding path. In such plugin, i would like to test if a packet is: - unicast - multicast - broadcast The starting condition is that the bridge has no knowledge of the IP configuration of the sending and receiving stations. It does not know about their netmask e.g. I have tried the following function

...be in br_input.c::br_handle_frame( ), but there, the dst mac address is already replaced by the bridge local mac address. My question is: where must i put the probe to get the original src and dst mac addresses? At the driver level? In the bridge, but where? Thx in advance. PS: please CC to louis.croisezATgmail.com, because i am receiving the digest once per day.

When i want to delete my test bridge, using: ifconfig eth0 down ifconfig eth1 down ifconfig br0 down brctl delif br0 eth0 brctl delif br0 eth1 brctl delbr br0 i get this error message from the kernel on the console: unregister_netdevice: waiting for br0 to become free. Usage count =3D 2 The brctl user-level command is blocked. Could you explain me what could likely be the cause of this error?

Hi, i am testing two bridges by sending to it random packets using hping2. First i create a random-length file, then i send it a lot of time on the wire using this command: for ($i=0; $i<50000; $i++) { hping2 -q -c 1 -d $data_len -E random.file 10.0.0.10 } My problem is that some packets are lost. Here is my setup: PC1 (10.0.0.1) ===== BR1 --------- BR2 ===== PC2 (10.0.0.10)

Hello all, i would like to build a setup to generate VLAN frames (respecting the IEEE 802.1Q standard) for testing purpose. How to configure a Linux bridge for it to become a VLAN switch? Is it possible? What user tool to use for that? brctl? Regards, Louis

Hello, i would like to build a bridge that is totally passive, in the sense that it does not generate any packet itself, so it must only forward traffic from eth0 to eth1 and vice-versa. What are the options that i must use for that special configuration? (brctl, etc...) Thanks in advance. Louis. -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi Robert, 2. Any ideas of something to try in order to make this repeatable? > = What i would do to reproduce it, is make a script establishing the bridge, = then flooding the bridge with some external ping -f, then shuting down the = bridge. If there is a refcount release problem, it should appear on eavy = load (some buffer overflow, or something like that). Also, are you playing with