[189526] in North American Network Operators' Group
Re: Public DNS64
daemon@ATHENA.MIT.EDU (Mark Andrews)
Wed Jun 1 07:49:38 2016
X-Original-To: nanog@nanog.org
To: Tore Anderson <tore@fud.no>
From: Mark Andrews <marka@isc.org>
In-reply-to: Your message of "Wed, 01 Jun 2016 10:37:07 +0200."
<20160601103707.7de9d97f@envy.e5.y.home>
Date: Wed, 01 Jun 2016 21:49:30 +1000
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
In message <20160601103707.7de9d97f@envy.e5.y.home>, Tore Anderson writes:
> * Baldur Norddahl
>
> > It goes to the USA and back again. They would need NAT64 servers in
> > every region and then let the DNS64 service decide which one is close
> > to you by encoding the region information in the returned IPv6
> > address. Such as 2001:470:64:[region number]::/96.
> >
> > An anycast solution would need a distributed NAT64 implementation,
> > such that the NAT64 servers could somehow synchronize state.
>
> Or you could simply accept that active sessions are torn down whenever
> the routing topology changes enough to flip traffic to the anycast
> prefix to another NAT64 instance in a different region.
>
> It would be no different from any other anycasted service.
But some services are inherently short lived. NAT64 has no such
property.
> Tore
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka@isc.org
