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I have set up a brctl bridge on Ubuntu with the following deployment: Cisco router - > Linux bridge - > client computer

The bridge forwards the following packets types: ARP,STP, but doesn't forward IP (i see that it get ippackets in eth0 but dosnt forward to eth1)

Trying brctl br0 stp off (and on) doesn't help. Trying to activate both ethernet cards with promisc mode doesn't help either.

Set edge to 0 (and set max edge to 0) doesn't help either.

Ebtables dosnt install on the bridge computer, so this is not problem of ebtables filtering.

When replace the router with simple computer that simulate simple TCP request the bridge forward the IP packets, so I suspect STP.

bridge was set like this:

iptables -X
iptables -F
ifconfig eth0 0.0.0.0 up
ifconfig eth1 0.0.0.0 up
brctl addbr br0
brctl addif br0 eth0 eth1
ifconfig br0 up
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@kamil whats do you mean by ' check router configuration ' –  stevekyrn Sep 27 '12 at 14:11
    
@kamil the router send ip packet to the bridge . they endpoint that conneted to the router got the packets , but i dont see that they are forward to the second endpoint. –  stevekyrn Sep 27 '12 at 15:35

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