Message-ID: <1393293719.6823.148.camel@deadeye.wl.decadent.org.uk>
Subject: Re: [RFC v2 2/4] net: enables interface option to skip IP
From: Ben Hutchings <ben@decadent.org.uk>
To: David Miller <davem@davemloft.net>
Cc: dcbw@redhat.com, mcgrof@do-not-panic.com, zoltan.kiss@citrix.com,
        netdev@vger.kernel.org, xen-devel@lists.xenproject.org,
        kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
        kuznet@ms2.inr.ac.ru, jmorris@namei.org, yoshfuji@linux-ipv6.org,
        kaber@trash.net
Date: Tue, 25 Feb 2014 02:01:59 +0000
In-Reply-To: <20140224.191238.921310808350170272.davem@davemloft.net>
References: <1393266120.8041.19.camel@dcbw.local>
	 <20140224.180426.411052665068255886.davem@davemloft.net>
	 <1393286520.6823.123.camel@deadeye.wl.decadent.org.uk>
	 <20140224.191238.921310808350170272.davem@davemloft.net>
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On Mon, 2014-02-24 at 19:12 -0500, David Miller wrote:
> From: Ben Hutchings <ben@decadent.org.uk>
> Date: Tue, 25 Feb 2014 00:02:00 +0000
>=20
> > 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 doin=
g
> > this; it was also done on the main FOSDEM wireless network this year.
>=20
> This seems to be bloating up the networking headers of the internal
> network, for what purpose?
>=20
> 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.

I doubt the extra header length hurts that much on a 3G or 4G network.

Ben.

--=20
Ben Hutchings
Everything should be made as simple as possible, but not simpler.
                                                           - Albert Einstei=
n

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