Re: [RFC v2 2/4] net: enables interface option to skip IP

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On Tue, Feb 25, 2014 at 02:01:59AM +0000, Ben Hutchings wrote:
> On Mon, 2014-02-24 at 19:12 -0500, David Miller wrote:
> > From: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
> > Date: Tue, 25 Feb 2014 00:02:00 +0000
> > 
> > > You can run an internal network, or access network, as v6-only with
> > > NAT64 and DNS64 at the border.  I believe some mobile networks are doing
> > > this; it was also done on the main FOSDEM wireless network this year.
> > 
> > This seems to be bloating up the networking headers of the internal
> > network, for what purpose?
> > 
> > For mobile that's doubly inadvisable.
> 
> I don't know what the reasoning is for the mobile network operators.
> They're forced to do NAT for v4 somewhere, and maybe v6-only makes the
> access network easier to manage.

Yes, it seems the way to go:
<http://www.dslreports.com/shownews/TMobile-Goes-IPv6-Only-on-Android-44-Devices-126506>

I can't comment on the 464xlat that much because I haven't looked at an
implementation yet, but it can very well be the case it still needs IPv4
on the outgoing interface, I don't know (from the spec pov it doesn't
look like that).

Greetings,

  Hannes

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