[129257] in North American Network Operators' Group
Re: Comcast enables 6to4 relays
daemon@ATHENA.MIT.EDU (Jeroen Massar)
Tue Aug 31 02:47:37 2010
Date: Tue, 31 Aug 2010 08:46:52 +0200
From: Jeroen Massar <jeroen@unfix.org>
To: Mitchell Warden <wardenm@wardenm.net>
In-Reply-To: <20100831062203.be89ed60@mail.wardenm.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 2010-08-31 08:22, Mitchell Warden wrote:
[..]
> Is there a reason not to advertise more specific prefixes from 2002::/16 to ensure that traffic for your v4 routes comes back to your own 6to4 router?
>
> If for example all my users have v4 addresses in 192.0.2.0/24, I could advertise 2002:C002:0000::/40 instead of or in addition to the full 2002::/16.
The RFC forbids that with a good reason, as then we'll end up importing
the IPv4 BGP table into IPv6... not something we want to see (unless one
loves to import 300k routes in there, I guess people will really start
whining about that though ;).
Greets,
Jeroen