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Re: [v6ops] Mobile: Happy DNSclientBalls

Erik Kline <ek@google.com> Thu, 11 January 2018 07:57 UTC

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From: Erik Kline <ek@google.com>
Date: Thu, 11 Jan 2018 16:57:30 +0900
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To: Thor-Henrik Kvandahl <kvandahl@gmail.com>
Cc: "v6ops@ietf.org WG" <v6ops@ietf.org>
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Subject: Re: [v6ops] Mobile: Happy DNSclientBalls
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We have an open bug to do RFC6724 sorting of nameservers.  Haven't
gotten around to it just yet.

As far as requirements go, I'm not aware of anything off the top of my
head.  Carriers can (and do) try to require whatever they can dream
up, but that's separate.

On 11 January 2018 at 16:46, Thor-Henrik Kvandahl <kvandahl@gmail.com> wrote:
> Hi,
>
>
>
> Does anyone know if there are defined requirements on behaviour for the DNS
> client on a Mobile Node (MN/UE) connected to a dual stack APN where the 3gpp
> IE container provisioned both IPv4 and IPv6 name servers?
>
> As far as I know it is up to the UE to prefer between the provisioned name
> servers, and I think they should prefer IPv6 name servers.
> My Android Oreo and Nougat DNS clients uses only IPv4 for DNS requests and I
> think it would be better for the NAT44(4) devices between the PGW and the
> resolver if the UE preferred to use the IPv6 name server(s).
>
> If there are no requirements for this, does anyone know the Google policy
> for Android on this?
>
> Iphone's seems to prefer the IPv6 name servers.
>
>
>
>
> --
>
> Thor-Henrik Kvandahl
>
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