push apps failing in Android until you disable IPv6

[Erik Nygren]

At least on some Samsung devices there is this known issue where they drop
IPv6 packets when screen-saved.
This is fixed n the Galaxy S7 apparently (I haven't tested myself).  I
agree this is a major problem...

http://developer.samsung.com/forum/board/thread/view.do?boardName=General&messageId=239890
http://www.gossamer-threads.com/lists/nsp/ipv6/54641


On Sat, Apr 30, 2016 at 8:03 AM, JORDI PALET MARTINEZ <
jordi.palet at consulintel.es> wrote:

> Hi,
>
> I’m not an Android user, but while doing and IPv6 training, many folks in
> the meeting room told me that they needed to disable IPv6 in the
> router/Android devices, otherwise they aren’t getting the notifications
> from WhatsApp, Facebook, and many other apps.
>
> We have tried disabling energy saving options in Android, and it seems the
> problems is not there. Basically, if the Android device is in stand-by,
> notifications don’t come, until you “open” the Android. Apple and Windows
> devices don’t have this problem.
>
> The scenario seems to happen regardless of the type of CPE (some observed
> this with ADSL, others with GPON).
>
> Just for having a “stable scenario” were to try, we have actually
> replicated this problem with Android 4.4 and 5.1, with an ONT Huawei
> HG8245H, hw v 494.B and firmware v V3R013C00S106.
>
> We have tried using both the ONT as the wireless AP and also disabling the
> WiFi on the ONT and using an external AP. Same problem in both situations.
>
> Don’t look like an issue related to a specific ISP, because the situation
> happens in many different ISPs, and of course none of them provides IPv6 :-(
>
> I’m specially worried because the ISPs are telling the users to disable
> IPv6 everywhere …
>
> Any hints ?
>
> Regards,
> Jordi
>
>
>
>
>
>
>
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