[2616] in linux-net channel archive
Re: ICMP redirects and IP forwarding
daemon@ATHENA.MIT.EDU (really kuznet@ms2.inr.ac.ru)
Sun Apr 21 09:19:10 1996
From: inr-linux-net@ms2.inr.ac.ru (really kuznet@ms2.inr.ac.ru)
To: linux-net@vger.rutgers.edu
Date: 21 Apr 1996 16:02:49 +0400
Carlos Carvalho (carlos@fisica.ufpr.BR) wrote:
: Alan has said several times that when you configure the kernel for IP
: forwarding it ignores ICMP packets. This is causing a problem in our
: campus.
.......
: All the ICMP's are generating useless traffic and congesting the
: backbone, as well as producing overhead on the central router. I see
: two alternatives: a) build static routes to all the local routers
: (there are about 25); b) use gated. This would be unnecessary if linux
: didn't ignore the ICMP.
Router MUST participate in some router protocol.
If any router will react to ICMP, it just will shred your
network. You will not get anything besides routing loops.
Moreover, this protocol should be OSPF. Avoid RIP,
if it is posssble.
: So the question is what's the reason for this behaviour? Is it in some
: RFC or is it a decision of the linux developers?
It is RFC requirement.
Alexey Kuznetsov.
