Public DNS64

Mark Andrews marka at isc.org
Fri Aug 15 22:11:04 UTC 2014


For a public DNS64 service you also need a public NAT64.  I suppose
anyone willing to run a Tor exit node might be also willing to run
such a service but it would be a traffic source anonymiser and
likely would be abused.

That said I could see it as a commercial service where only certain
sets of IPv6 clients get to use the service with a strict mapping
to IPv4 source addresses, logging etc.  A ISP which had already set
this up for themselves and had enough IPv4 addresses could offer
this to IPv6 only ISP's as a service they could buy.

Similarly a consortium of ISPs could set this up for their members
possibly pooling IPv4 addresses from the members.

Someone like HE might like to run such a service to further promote
IPv6.

This is something transit providers might get into.  IPv6 to IPv4
Translation services for IPv6 only clients.

The same arguements also work for DS-Lite.

Mark

In message <CAE_ug15pz69UOwQZ1z0kOKc+zE2s7j2H8-qoeo-QkE=M-jCKQg at mail.gmail.com>, Tim Durack writes:
> Yeah, sort of agree, except I'm allergic to running services that aren't
> straight bit shoveling. NAT64 is pushing it, but at least that is just
> announcing a prefix.
> 
> 
> On Fri, Aug 15, 2014 at 2:33 PM, Rubens Kuhl <rubensk at gmail.com> wrote:
> 
> >
> >
> >
> > On Fri, Aug 15, 2014 at 3:29 PM, Tim Durack <tdurack at gmail.com> wrote:
> >
> >> Anyone know of a reliable public DNS64 service?
> >>
> >> Would be cool if Google added a Public DNS64 service, then I could point
> >> the NAT64 prefix at appropriately placed boxes in my network.
> >>
> >> Why? Other people are better than me at running DNS resolvers :-)
> >>
> >
> > No one is better than you at running DNS resolvers with low latency from
> > your network. Even if they can run DNS resolvers with magical capabilities,
> > they will still suffer from transit time.
> >
> >
> > Rubens
> >
> >
> 
> 
> 
> -- 
> Tim:>
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org


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