<div dir="ltr"><div>At least on some Samsung devices there is this known issue where they drop IPv6 packets when screen-saved.<br></div>This is fixed n the Galaxy S7 apparently (I haven't tested myself). I agree this is a major problem...<br><br><a href="http://developer.samsung.com/forum/board/thread/view.do?boardName=General&messageId=239890">http://developer.samsung.com/forum/board/thread/view.do?boardName=General&messageId=239890</a><br><a href="http://www.gossamer-threads.com/lists/nsp/ipv6/54641">http://www.gossamer-threads.com/lists/nsp/ipv6/54641</a><br><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Apr 30, 2016 at 8:03 AM, JORDI PALET MARTINEZ <span dir="ltr"><<a href="mailto:jordi.palet@consulintel.es" target="_blank">jordi.palet@consulintel.es</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
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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.<br>
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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.<br>
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The scenario seems to happen regardless of the type of CPE (some observed this with ADSL, others with GPON).<br>
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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.<br>
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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.<br>
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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 :-(<br>
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I’m specially worried because the ISPs are telling the users to disable IPv6 everywhere …<br>
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Any hints ?<br>
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Regards,<br>
Jordi<br>
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