New router feature - icmp error source-interface

On Mon, Sep 25, 2006 at 08:45:49PM -0400, John Curran wrote:
> 
> At 9:22 AM -0400 9/25/06, Patrick W. Gilmore wrote:
> >
> >Who thinks it would be a "good idea" to
have a knob such that ICMP error messages are always source
from a certain IP address on a router?
> 
> It certainly would beat the alternative of no response
at all,
> but one would hope it wouldn't become common practice
> since it reduces the information returned (e.g. during
a
> traceroute, you'd lose the sometimes useful
information
> from in-addr about what particular interface was
involved).

Personally I'd hope that if it was implemented, it would
support mapping 
on a per-interface basis (especially for NSP use). That
should in theory 
lead to even more accurate information, since each network
would be 
capable of easily renumbering without impact, and managing
their own DNS 
for every interface. Currently a great many PTRs are out of
date because 
IP blocks supplied by peers, exchange points, or transit
providers, are 
too much of a pain to keep updated when interfaces move etc.

-- 
Richard A Steenbergen <rase-gerbil.net>       http://www.e-gerbil.net/r
as
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