nanog mailing list archives
Re: Strange public traceroutes return private RFC1918 addresses
From: Pekka Savola <pekkas () netcore fi>
Date: Tue, 3 Feb 2004 07:58:46 +0200 (EET)
On Tue, 3 Feb 2004, Rubens Kuhl Jr. wrote:
Using real but announced IPs for routers will make their packets fail unicast-RPF checks, dropping traceroute and PMTUD responses as happens with RFC1918 addresses.
I guess you meant "unannounced". This is the case for those who run uRPF towards their upstream (or transit ISPs peering with them who'd run uRPF on the peering links). I don't think too many folks do that. But I see very little point in not announcing them. Equally well you could just set up an acl at the edge which drops or rate-limits the traffic. Well, you might not be able to if you're using a vendor the implementation of which doesn't allow you to do that.. :) -- Pekka Savola "You each name yourselves king, yet the Netcore Oy kingdom bleeds." Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
Current thread:
- Strange public traceroutes return private RFC1918 addresses Brian (nanog-list) (Feb 02)
- Re: Strange public traceroutes return private RFC1918 addresses Jonas Frey (Probe Networks) (Feb 02)
- Re: Strange public traceroutes return private RFC1918 addresses Matthew Crocker (Feb 02)
- Re: Strange public traceroutes return private RFC1918 addresses Matthew Crocker (Feb 02)
- Re: Strange public traceroutes return private RFC1918 addresses Bob Snyder (Feb 02)
- Re: Strange public traceroutes return private RFC1918 addresses Rubens Kuhl Jr. (Feb 02)
- Re: Strange public traceroutes return private RFC1918 addresses Pekka Savola (Feb 02)
- Re: Strange public traceroutes return private RFC1918 addresses Vincent Gillet - Opentransit (Feb 03)
- <Possible follow-ups>
- Re: Strange public traceroutes return private RFC1918 addresses Michael . Dillon (Feb 03)
- RE: Strange public traceroutes return private RFC1918 addresses Terry Baranski (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses bill (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Petri Helenius (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses bill (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Petri Helenius (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Niels Bakker (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Petri Helenius (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Leo Bicknell (Feb 03)
- RE: Strange public traceroutes return private RFC1918 addresses Terry Baranski (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Jonas Frey (Probe Networks) (Feb 02)