[Click] Weird bridge behavior unpatched 2.6.31.12
Lars Bro
lbro at pulz8.com
Wed Mar 17 07:02:54 EDT 2010
Hi,
I have a click configuration where I need make a tap on the traffic between
two hosts. Therefore, I have made a simple
"Bridge" element class like below:
/*
* Bridge between two interfaces and send IP packets to output
*/
elementclass Bridge {
\$if1, \$if2 |
FromDevice(\$if1) ->
if1_tee::Tee();
FromDevice(\$if2) ->
if2_tee::Tee();
if1_tee\[0\] ->
Queue() ->
ToDevice(\$if2);
if1_tee\[1\] ->
Strip(14) ->
output;
if2_tee\[0\] ->
Queue() ->
ToDevice(\$if1);
if2_tee\[1\] ->
Strip(14) ->
output;
};
When the test router is not running, I will of course need the bridging
functionality anyway, so I do
brctl addbr br0
brctl addif br0 xxx
brctl addif br0 yyy
ip link set up dev br0
Before starting the router. I remove the bridge and set the interfaces up
ip link set down dev br0
brctl delbr br0
ip link set up dev xxx
ip link set up dev yyy
click-install ...
This seems not to work, however. It seems that only broadcast traffic (and
maybe also traffic directly for the xxx and yyy
MAC addrees, but I dont know, since I am trying to make a bridge)
If I try with
ip link set xxx promisc on
ip link set yyy promisc on
I get "some" data through, still not good enough
But if I start the router without removing the original bridge, it works
fine as far as I can see.
Is this as it is supposed to be ?
yours,
Lars Bro
More information about the click
mailing list