Re: [homegate] [fun] HOMENET working group proposal

james woodyatt <> Thu, 30 June 2011 23:51 UTC

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Date: Thu, 30 Jun 2011 16:51:29 -0700
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Subject: Re: [homegate] [fun] HOMENET working group proposal
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On Jun 30, 2011, at 16:10 , Robert Raszuk wrote:
> ...when there is new killer app which works only over v6...

There's another conditional that may be more relevant.

When there is a new "killer" application that doesn't work when one endpoint is IPv4-only and the other is attached to a 3GPP network with IPv6-only service and using NAT64 with the well-known 64:ff9b::/64 prefix, and optionally a bump-in-the-host to provide an IPv4 networking API to applications.  I happen to be aware of a whole family of interesting applications that are broken by such configurations, and I'm pretty sure they will remain broken into the foreseeable future.  Those configurations are already here in some parts of the Internet, and when these applications I'm thinking about are deployed on those networks (they are not currently, but... mene mene tekel upharsin), they will fail.

And whose fault will that be?  Not mine, brother.  Not mine.

Is your service provider breaking those awesome applications by not offering full dual-stack service?  If so, then you need to get a new service provider.  Either get one that offers full dual-stack over 3GPP so your applications can connect with IPv4-only endpoints, or get one that offers full dual-stack over first-mile wireline to your site, so your applications can connect to IPv4-impaired mobile endpoints.

The key thing here is that by Alice choosing to use one service provider over another, she can make Bob's application fail, and vice versa.  The mobile service providers that don't have enough IPv4 addresses to serve all their customers are in a bind and can't budge.  The wireline service providers who have 5-10 years of IPv4 addresses in reserve are the ones whistling past the graveyard.

james woodyatt <>
member of technical staff, core os networking