nanog mailing list archives
Re: Request for comment -- BCP38
From: Florian Weimer <fw () deneb enyo de>
Date: Tue, 27 Sep 2016 15:08:49 +0200
* Stephen Satchell:
Given a single local inside network with: * multiple uplink providers (typical multi-home situation) * multiple edge routers, each connected to an upstream via a public routeable /30, and each further connected to the downstream inside network * 50 subnets (to pick a number) of routeable IP address space downstream from the edge routers, with routing announcements to the world that direct packets back to the edge routers BCP38 demands that ANY packet leaving ANY edge router to the upstream MUST have a source address: * within the 50 inside public route-able subnets, or * within a list of "my" addresses in the public /30 subnets. True statement?
This depends on the agreements with the upstream providers. They might reasonably exclude their own /30 they provided to you and the /30s from the other providers. In general, packets from the /30s would not travel far anyway because they would wail source address verification checks at the upstream provider. Some providers also use globally unique, but unrouted addresses for transfer networks, for infrastructure protection purposes.
Current thread:
- Re: Request for comment -- BCP38, (continued)
- Re: Request for comment -- BCP38 Hugo Slabbert (Sep 26)
- Re: Request for comment -- BCP38 Laszlo Hanyecz (Sep 26)
- Re: Request for comment -- BCP38 Mike Hammett (Sep 26)
- Re: Request for comment -- BCP38 Baldur Norddahl (Sep 26)
- Re: Request for comment -- BCP38 Florian Weimer (Sep 26)
- Re: Request for comment -- BCP38 Baldur Norddahl (Sep 26)
- Re: Request for comment -- BCP38 Florian Weimer (Sep 27)
- Re: Request for comment -- BCP38 Jason Iannone (Sep 27)
- Re: Request for comment -- BCP38 Florian Weimer (Sep 27)
- Re: Request for comment -- BCP38 Stephen Satchell (Sep 27)
- Re: Request for comment -- BCP38 Florian Weimer (Sep 27)
- Re: Request for comment -- BCP38 Aled Morris (Sep 26)
- Re: Request for comment -- BCP38 John Levine (Sep 26)
- Re: Request for comment -- BCP38 Laszlo Hanyecz (Sep 26)
- Re: Request for comment -- BCP38 Eliot Lear (Sep 26)
- Re: Request for comment -- BCP38 Mark Andrews (Sep 26)
- Re: Request for comment -- BCP38 Hugo Slabbert (Sep 26)
- Re: Request for comment -- BCP38 John Levine (Sep 26)
- Re: Request for comment -- BCP38 Mike Hammett (Sep 26)
- Re: Request for comment -- BCP38 Hugo Slabbert (Sep 26)
- Re: Request for comment -- BCP38 Hugo Slabbert (Sep 26)