nanog mailing list archives
Re: Comcast enables 6to4 relays
From: Mark Andrews <marka () isc org>
Date: Wed, 01 Sep 2010 08:13:57 +1000
In message <20100831062203.be89ed60 () mail wardenm net>, "Mitchell Warden" writes :
The list seems to be showing relays that announce both the IPv4 and the IPv6 anycast prefixes. I have noticed a number of deployments that announce the (in)famous IPv4 prefix and then consider their deployment complete. I suspect that there is a lack of 2002::/16 announcements and this would be contributing to the regular problems with return paths. Obviously the IPv6 content networks benefit the most from having a relay translating back to IPv4. Anyone have experience with this? -- Graham BenekeIs 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. Cheers. Mitchell
Which would end up with the entire set of IPv4 routes in IPv6. This is not a good idea. Just do you part and encapuslate/decapsulate as soon as possible and let the other end do the same. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka () isc org
Current thread:
- Re: Comcast enables 6to4 relays, (continued)
- Re: Comcast enables 6to4 relays Valdis . Kletnieks (Aug 31)
- Teredo and 'firewalls' (Re: Comcast enables 6to4 relays) Jeroen Massar (Aug 31)
- Re: Teredo and 'firewalls' (Re: Comcast enables 6to4 relays) Jack Bates (Aug 31)
- Re: Teredo and 'firewalls' (Re: Comcast enables 6to4 relays) Jeroen Massar (Aug 31)
- RE: Teredo and 'firewalls' (Re: Comcast enables 6to4 relays) Nathan Eisenberg (Aug 31)
- Re: Teredo and 'firewalls' (Re: Comcast enables 6to4 relays) Jeroen Massar (Aug 31)
- RE: Teredo and 'firewalls' (Re: Comcast enables 6to4 relays) Sean Siler (Aug 31)
- Re: Comcast enables 6to4 relays Jeroen Massar (Aug 30)
- Re: Comcast enables 6to4 relays Franck Martin (Aug 31)
- Re: Comcast enables 6to4 relays Mark Andrews (Aug 31)