Re: Overlay broad patent on IPv6?

[Mike Hammett <nanog () ics-il net>]

The CPE does the private IP space it traditionally does for the end user equipment. If a v4 address is needed, it is 
pushed from the provider to the CPE, where it does NAT. It doesn't need your Windows, Linux, Android box to support 
anything atypical. 




----- 
Mike Hammett 
Intelligent Computing Solutions 
http://www.ics-il.com 



Midwest Internet Exchange 
http://www.midwest-ix.com 


----- Original Message -----

From: "Baldur Norddahl" <baldur.norddahl () gmail com> 
To: nanog () nanog org 
Sent: Monday, July 13, 2015 10:54:49 AM 
Subject: Re: Overlay broad patent on IPv6? 

Too bad it won't actually work. I type Slashdot.org in my browser. The web 
browser does DNS lookup. The CPE notices there is only an A record 
available and boots the IPv4 stack. However there is no way to push an IPv4 
configuration to my computer. DHCP is pull not push. Even if there was, the 
web browser would not be prepared for an IPv4 configuration to suddenly 
appear in the middle of a request. 

I notice the patent application does not actually specify how this is 
supposed to work. It should not be possible to patent without building a 
prototype and indeed without even knowing how to build one. Then if someone 
later figures out the details, you somehow owe your soul to these guys that 
just did some handwaving. 

Regards 

Baldur 
Den 13/07/2015 17.33 skrev "Shane Ronan" <shane () ronan-online com>: 

> This is actually a good idea. Roll out an IPV6 only network and only pass 
> out an IPV4 address if it's needed based on actual traffic. 
> On Jul 13, 2015 11:27 AM, "John Levine" <johnl () iecc com> wrote: 
>
> > In article <CAP032TteiL3=k= 
> > vs-KEdGU276fWGXqn1J9jmORLq8sW4xPE-Wg () mail gmail com> you write: 
> > > http://www.google.com/patents/US20130254423 
> >
> > This is not a patent. It is a patent application. Most applications 
> > do not turn into patents, or at least not with all of the claims 
> > included. 
> >
> > If you look at the claims, which are what matter, this is for a rather 
> > specific hack in a broadband router which assigns a v4 address on the 
> > fly when a DNS lookup from behind the router returns a result that 
> > suggests that v4 traffic will happen, presumably by returning an A 
> > record. 
> >
> > I can't imagine how anyone would misread this as a patent on IPv6. 
> >
> > R's, 
> > John