[Sorry for the delay in responding to this]

Jean-Michel Favre wrote:
> Is it possible to have more than one instance of the net-snmp snmpd deamon
> running on the same host ?

Yes - it's quite possible to do this.
I do so frequently when testing new versions of the agent.
(Normally listening on different ports, rather than different interfaces)

> Each instance would be listening on a specific network interface .

Try running

snmpd `hostname`

That should start two separate agents - one listening on the loopback
interface, and one on the main network interface.

You could also specify the local address explicitly, and/or give a
particular port to listen on: