dhcrelay and ipip tunnels

Alex Bligh alex at alex.org.uk
Sat Sep 8 08:40:31 UTC 2012

--On 8 September 2012 08:31:30 +0100 Simon Hobson <dhcp1 at thehobsons.co.uk> 

> It may even be possible to run the relay agent on the gateway if you can
> set it up in some sort of partitioned environment with it's own ethernet
> interface such that it uses one interface and it's server traffic goes
> via the local wire and back in on the main ethernet interface (and
> vice-versa for return packets).

If running under Linux you can use a veth device pair to achieve
  ip link add FOO type veth peer name BAR
These can participate in bridges so I'm pretty sure they would work.

I'm not sure you need a separate network container though. I would
have thought some policy routing might be enough.

Alex Bligh

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