[Bridge] How to determine where bridged packets originally come from ?

Faruk Keskin faruk at eit.uni-kl.de
Tue Jun 10 21:09:45 PDT 2008

> Hi all,
> I ended up using raw packet sockets (ETH_P_ALL) with BPF filters attached
> (binded on the bridge interface) to capture packets for the userspace
> host.
> Now having captured these packets from the bridge interface, how do I know
> which interface (eth0, wifi0, ..) the packets were send from originally ?
> Is there a handy solution to this without modifying the packet content ?
> Please help me out I you got the answer down pat.
> BR, Faruk

Hi all, there's been a patch which introduced a new option for packet
sockets returning the original device which was eventually bonded. It's
called ORIGDEV.

BR, Faruk

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