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Re: [Xen-users] IPV4 is nearly depleted, are you ready for IPV6?

To: rudi@xxxxxxxxxxx, Xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] IPV4 is nearly depleted, are you ready for IPV6?
From: Jonathan Tripathy <jonnyt@xxxxxxxxxxx>
Date: Mon, 06 Dec 2010 16:41:04 +0000
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On 05/12/10 11:50, Rudi Ahlers wrote:
Seeing as IPV4 is near it's end of life
I'm curios as who know whether everyone is ready for the changeover to

Is anyone using it in production already, and what are your experiences with it?

A problem with using IPv6 at the minute is that netfilter doesn't have as-advanced filtering capabilities as it does with IPv4. This is important when your DomUs are for customers on an unmanaged basis.

The main issue is that IPv6 doesn't use ARP anymore, so all MAC address detection is done in the IP layer and AFAIK, netfilter doesn't have the proper filtering for IPv6 to prevent MAC spoofing. What we really need is an IPv6 equivalent to arptables.


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