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Tier 2 ingress filtering

On 2013-03-29 14:49, William Herrin wrote:
> I've long thought router vendors should introduce a configuration
> option to specify the IP address from which ICMP errors are emitted
> rather than taking the interface address from which the packet causing
> the error was received.

Concur. An 'ip(v6)? icmp source-interface loop0' sure beats running 'ip
unnumbered loop0' everywhere. ;)