Best practice - dual stack DNS?

Eric Vyncke (evyncke) evyncke at
Tue Oct 22 07:15:18 CEST 2013

I stand corrected and thanks for the good pieces of news


From: Lorenzo Colitti [mailto:lorenzo at]
Sent: mardi 22 octobre 2013 10:42
To: Eric Vyncke (evyncke)
Cc: Roger Wiklund; ipv6-ops at; Brian E Carpenter
Subject: RE: Best practice - dual stack DNS?

AIUI Cisco supports RFC 6106 on the ASR1K.
Mac OS X and iOS do support it, I think (tested recently).
Android does not yet support it.
Windows does not support it.
On 22 Oct 2013 13:45, "Eric Vyncke (evyncke)" <evyncke at<mailto:evyncke at>> wrote:
I can confirm the lack of support on IOS (see my email address). Moreover, AFAIK there is no support in Windows, Android and Mac OS/X


From: at< at> [mailto:ipv6-ops-bounces+evyncke<mailto:ipv6-ops-bounces%2Bevyncke> at< at>] On Behalf Of Roger Wiklund
Sent: mardi 22 octobre 2013 01:54
To: Brian E Carpenter
Cc: ipv6-ops at<mailto:ipv6-ops at>
Subject: Re: Best practice - dual stack DNS?

Not supported on either IOS or JUNOS afaik.


On Mon, Oct 21, 2013 at 9:41 PM, Brian E Carpenter <brian.e.carpenter at<mailto:brian.e.carpenter at>> wrote:
What about ?


On 22/10/2013 01:24, Roger Wiklund wrote:
> Hi.
> I'm setting up a wireless guest network with dual stack.
> Private IPv4 via DHCP and public IPv6 via SLAAC.
> At first had the client first hop IPv6 routing on the WAN CPE using SLAAC
> and DHCPv6 just for DNS.
> I decided to move the client first hop IPv6 routing to the ASA firewall
> instead, but it does not support DHCPv6.
> So currently I only have IPv4 DNS and what works just fine. What's the best
> practice for dual stack DNS? Should I bother with setting up DHCPv6 relay
> etc?
> Thanks!
> /Roger

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