nanog mailing list archives
Re: Policies: Routing a subset of another ISP's address block
From: Randy Bush <randy () psg com>
Date: Wed, 05 Apr 2000 16:28:18 -0700
You're going to have to exempt multihomed downstream customers from your anti spoofing filters anyway, whether they use your space, someone else's or their own.
indeed this seems to be the case. which breaks the schemes for ingress filtering based on forwarding table entries <sigh>.
To put it another way, if you have clueful downstreams, you should delegate anti spoofing to them, they will do it closer to the edge where there is no asymetrical routing.
one of the rare bits of positive feedback here. multi-homed customers do tend to be a bit more clued. so, in this too rare instance, the pain is near some clue to fix it. randy
Current thread:
- Policies: Routing a subset of another ISP's address block David Harrison (Apr 05)
- Re: Policies: Routing a subset of another ISP's address block Jesper Skriver (Apr 05)
- Re: Policies: Routing a subset of another ISP's address block Daniel L. Golding (Apr 05)
- Re: Policies: Routing a subset of another ISP's address block Alexei Roudnev (Apr 05)
- Multi-homing - service provider issues Dustin Goodwin (Apr 06)
- Re: Multi-homing - service provider issues Adrian Chadd (Apr 06)
- Re: Policies: Routing a subset of another ISP's address block Jesper Skriver (Apr 05)
- <Possible follow-ups>
- Re: Policies: Routing a subset of another ISP's address block Daniel L. Golding (Apr 05)
- Re: Policies: Routing a subset of another ISP's address block Jesper Skriver (Apr 07)
- RE: Policies: Routing a subset of another ISP's address block Dmitri Krioukov (Apr 07)
- Re: Policies: Routing a subset of another ISP's address block Jesper Skriver (Apr 07)
- Re: Policies: Routing a subset of another ISP's address block Phillip Vandry (Apr 05)
- Re: Policies: Routing a subset of another ISP's address block Randy Bush (Apr 05)
- Re: Policies: Routing a subset of another ISP's address block Jesper Skriver (Apr 07)
- Re: Policies: Routing a subset of another ISP's address block Jesper Skriver (Apr 07)
- Re: Policies: Routing a subset of another ISP's address block Jesper Skriver (Apr 07)
- RE: Policies: Routing a subset of another ISP's address block Greene, Dylan (Apr 07)
- RE: Policies: Routing a subset of another ISP's address block Dmitri Krioukov (Apr 07)
- The ol' upstream workaround [WAS:Policies: Routing a subset...] Brian Wallingford (Apr 07)
- Re: The ol' upstream workaround [WAS:Policies: Routing a subset...] Brian Candler (Apr 08)
- Re: The ol' upstream workaround [WAS:Policies: Routing a subset...] Jesper Skriver (Apr 09)
- RE: Policies: Routing a subset of another ISP's address block Dmitri Krioukov (Apr 07)
- RE: Policies: Routing a subset of another ISP's address block Hank Nussbacher (Apr 08)
- Re: Policies: Routing a subset of another ISP's address block Niels Chr. Bank-Pedersen (Apr 08)