Re: target extension: set output interface

On Thursday 29 May 2003 00:43, Vaclav Dvorak wrote:
> Hello list!
>
> Would it be possible to add a target extension to ebtables that would,
> for a matching packet, set the network interface that it will be sent
> out with? It would be analogous to the ROUTE target extension of
> iptables:
> http://www.netfilter.org/documentation/pomlist/pom-extra.html#ROUTE
> It would take either option "--transmit-on <real_interface>", or
> "--flood <bridge_interface>".

Can you elaborate on the possible use of "--transmit-on <real_interface>" and
"--flood <bridge_interface>"? Unless they can have some use I don't think 
these options should be included, the implementation will touch the bridge 
code.
Seems to me your problem asks for an option "--resend-on-iif" (resend on input 
interface). This can be implemented in a fairly easy way, 'though it will 
touch the bridge code. I'll put this on the todo-list.

> because of QoS.) So I thought that the proposed ebtables target
> extension might solve this. Any other ideas?

You could also (let someone) hack the kernel code.
br_forward.c::should_deliver() is the function to look at.

> By the way, the "-s" option seems to be mostly missing from the man page
> at http://ebtables.sourceforge.net/ebtables-man.html

Oh, wasn't aware of that, thanks.

cheers,
Bart



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