Note that I am just doing an 'snmpget' and not using the net-snmp agent.
The remote network router/firewall is the one that is responding back to my
snmpget with a different src IP.
I do a: snmpget 1.1.1.1 oid
and the remote router sends a response back with its src IP of 1.1.1.2.
So the question is:
does snmpget (or net-snmp library) compare the src IP of the
recieved pkt to the dest IP of the sent pkt?
-vikas
> On Wed, 29 Sep 2004 22:41:14 -0400 Vikas wrote:
> VA> We have a situation where a network router/firewall with multiple IP
> VA> addresses and tunnel interfaces is responding to the SNMP query with a
> VA> different SRC address. i.e.
> VA>
> VA> SNMP query sent to 1.1.1.1 (one of the ethernet interfaces)
> VA> Reply comes back from 1.1.1.2 (which is an addr on one of the tunnel
> VA> interfaces)
> VA>
> VA> We are trying v1/v2 and simple UDP snmpget.
> VA>
> VA> Does net-snmp (or older ucd-snmp) try and match the sent-to-IP and
> VA> recv-from-IP? If so, any way to disable this behavior?
>
> No. The agent, by default, binds to all open interfaces at
> startup, and does
> not specify an ip address when sending the reply. The kernel
> selects the IP
> address for the outgoing packet.
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