[c-nsp] setting source address for icmp messages

[Joe Maimon]

Oliver Boehmer (oboehmer) wrote:
> Mike <> wrote on Monday, February 09, 2009 00:28:
> 
>> No.
>>
>> I am trying to ensure that if the router ever emits icmp messages like
>> 'destination host unreachable', 'icmp frag needed' and the like, that
>> I'm using a public routed ip and not some random flavor of the week ip
>> related to whatever interface the router thinks is closer to the
>> problem. 
> 
> I don't think this can be done..
> 
> 	oli


Of course it can be done, its just really inelegant and requires nat, 
which is problematic for many.

It sure would be nice were it to be a nice feature such as control-plane 
nat or an interface level command such as

ip icmp source-interface loopback10