[92593] in North American Network Operators' Group
Re: icmp rpf
daemon@ATHENA.MIT.EDU (Bill Stewart)
Wed Sep 27 19:05:30 2006
Date: Wed, 27 Sep 2006 16:04:37 -0700
From: "Bill Stewart" <nonobvious@gmail.com>
To: "Mark Kent" <mark@noc.mainstreet.net>
Cc: nanog@merit.edu
In-Reply-To: <20060925170900.0D60A28467@noc.mainstreet.net>
Errors-To: owner-nanog@merit.edu
Possible approach for small.net - ok, you know that big.net will drop
any packets sourced from x.x.x.x if there's no route there (loose uRPF
for downstream ISPs like small.net, strict uRPF for end-users.) So
give them a route. Either give them a route on one of your direct
interfaces to them, and then get rid of the packets by ACL or by
null-routing it, or if that causes too much trouble, get yourself a
56kbps line from a spare router and advertise it from there.
