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IPv6 and Android auto conf

daemon@ATHENA.MIT.EDU (Anurag Bhatia)
Mon Sep 28 08:04:28 2015

X-Original-To: nanog@nanog.org
From: Anurag Bhatia <me@anuragbhatia.com>
Date: Mon, 28 Sep 2015 17:33:46 +0530
To: NANOG Mailing List <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org

Hello everyone




I recently got IPv6 working at home LAN. My Android device (Google Nexus 5)
is connected via wifi to LAN and LAN's core router is Map2N
<http://routerboard.com/RBmAP2n>. I have a /64 on the LAN with "advertise"
enabled to make ND to work and have autoconfig working on all devices.
There are bunch of other layer 2 devices in LAN but all just acting as
layer 2 transparently and core L3 remains on Map2N.


All works well for most part but only trouble I am getting is on Nexus 5
where after around 24hrs IPv6 stops working. Only unusual thing I notice at
that time is that phone 4 IPv6 as opposed to 2 (autoconf and temporary
randomised address). Seems like some kind of issue in way NDP works either
on Microtik or phone. The fix I am doing from few days is to restart wifi
and phone interface gets fresh (two) IPv6 addresses and all works well
again.



Anyone facing similar issue? (Note: No issues on OS X or iOS which are in
same LAN)


I can try DHCPv6 but I guess most of devices do not support it yet. (I see
support for that in routerboard though).





Thanks.


-- 


Anurag Bhatia
anuragbhatia.com


PGP Key Fingerprint: 3115 677D 2E94 B696 651B 870C C06D D524 245E 58E2

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