[190707] in North American Network Operators' Group
Re: IPv6 Deployment for Mobile Subscribers
daemon@ATHENA.MIT.EDU (james machado)
Fri Jul 22 12:58:03 2016
X-Original-To: nanog@nanog.org
In-Reply-To: <CAE0OVL9f9JEMDWx3-DzH7-nQUbWJFGAE5oWfWN-sX6MXhMtq_A@mail.gmail.com>
From: james machado <hvgeekwtrvl@gmail.com>
Date: Fri, 22 Jul 2016 09:57:58 -0700
To: Ricardo Ferreira <ricardofbferreira@gmail.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
Ricardo,
I know from previous discussions on this list that Android phones are
looking for DHCPD leases and not /128's or /64's. From what I remember
this is due to the current requirement for multiple ipv6 subnets for
various applications (vpns among others) to function correctly. As a
result Google has disabled Android from receiving a DHCP lease as it wasn't
long enough.
if you look back about 6 months there is probably 100+ posts on the subject.
All I really know is that I can not provide an ipv6 dhcp lease to an
android phone and have it receive the address.
james
On Fri, Jul 22, 2016 at 1:54 AM, Ricardo Ferreira <
ricardofbferreira@gmail.com> wrote:
> Is there anyone here working in an ISP where IPv6 is deployed?
> We are starting to plan the roll-out IPv6 to mobile subscribers (phones) I
> am interesting in knowing the mask you use for the assignment; whether it
> is /64 or /128.
>
> In RFC 3177, it says:
> 3. Address Delegation Recommendations
>
> The IESG and the IAB recommend the allocations for the boundary
> between the public and the private topology to follow those general
> rules:
>
> - /48 in the general case, except for very large subscribers.
> - /64 when it is known that one and only one subnet is needed by
> design.
> - /128 when it is absolutely known that one and only one device
> is connecting.
>
> Basically a sole device will be connecting to the internet so I am
> wondering if this rule is follwed.
>
> Cheers
>
> --
> Ricardo Ferreira
>
