Best practice - dual stack DNS?

[Trevor Warwick (twarwick)]

FWIW, the RFC6106 support that's in IOS (big I) allows one to specify  DNS Server Addresses but not, currently, the DNS Search List.  As Lorenzo mentioned, this is in the latest ASR1000 release, and will appear on other platforms over time as their releases pick up the latest version of ND. E.g. for the "T" release on ISRs, this is intended to ship in Q1CY14 - but as ever, contact your account team for committed dates.

Trevor


From: ipv6-ops-bounces+twarwick=cisco.com at lists.cluenet.de [mailto:ipv6-ops-bounces+twarwick=cisco.com at lists.cluenet.de] On Behalf Of Eric Vyncke (evyncke)
Sent: 22 October 2013 06:15
To: Lorenzo Colitti
Cc: Roger Wiklund; ipv6-ops at lists.cluenet.de
Subject: RE: Best practice - dual stack DNS?

I stand corrected and thanks for the good pieces of news

-éric

From: Lorenzo Colitti [mailto:lorenzo at google.com]
Sent: mardi 22 octobre 2013 10:42
To: Eric Vyncke (evyncke)
Cc: Roger Wiklund; ipv6-ops at lists.cluenet.de<mailto:ipv6-ops at lists.cluenet.de>; 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 cisco.com<mailto:evyncke at cisco.com>> 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

-éric

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

Not supported on either IOS or JUNOS afaik.

/Roger

On Mon, Oct 21, 2013 at 9:41 PM, Brian E Carpenter <brian.e.carpenter at gmail.com<mailto:brian.e.carpenter at gmail.com>> wrote:
What about http://tools.ietf.org/html/rfc6106 ?

   Brian

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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