(Copied back to the list, as the list filtered the original message with the screen capture attachment)
For the info of the list. This is what the rdisc6 provided: Hop Limit: 64 (0x40) Stateful address cons.: No Stateful other cons.: Yes Router preference: medium Router lifetime: 1800 (0x00000708) seconds Reachable time: unspecified (0x00000000) Retransmit time: unspecified (0x00000000) MTU: 1472 bytes (valid) Source link-layer address: 2C:CF:58:E5:7C:C0 From fe80::1 Right, but how this is affecting IPv4 push notifications ? My understanding is that the servers doing the “push”, as the WAN link has not got IPv6, are doing the push with IPv4. I could understand that Android may be slower to react to dual-stack traffic because there is a default route announced by the router with no GUA, but getting the push ? By the way, anyone got rdisc6 working in Mac OS X El Capitan ? Regards, Jordi -----Mensaje original----- De: Erik Kline <[email protected]> Responder a: <[email protected]> Fecha: martes, 10 de mayo de 2016, 4:41 Para: Jordi Palet Martinez <[email protected]> CC: Lorenzo Colitti <[email protected]> Asunto: Re: push apps failing in Android until you disable IPv6 >Uh...non-zero router lifetime means it's announcing a default route. >That seems unwise. > >On 10 May 2016 at 02:49, JORDI PALET MARTINEZ ><[email protected]> wrote: >> Just got a “screen” capture from one of those situations (rdisc6). >> >> Hopefully is useful ! They made it from a virtual machine in the same >> network as the Androids have the problema, having the VMware interfaces in >> bridge mode. >> >> Saludos, >> Jordi >> >> >> >> >> >> >> >> >> >> -----Mensaje original----- >> De: <[email protected]> en nombre >> de Erik Kline <[email protected]> >> Responder a: <[email protected]> >> Fecha: lunes, 9 de mayo de 2016, 10:59 >> Para: Jordi Palet Martinez <[email protected]> >> CC: IPv6 Ops list <[email protected]>, Lorenzo Colitti >> <[email protected]> >> Asunto: Re: push apps failing in Android until you disable IPv6 >> >>>If this router were to send out an RA advertising itself as a default >>>router in this configuration that would probably cause the symptoms >>>you're seeing. That's why I asked for a sample of any RAs seen on >>>such a network. (Such a configuration would of course be broken, >>>effectively requiring Happy Eyeballs to function at all.) >>> >>>On 9 May 2016 at 17:52, JORDI PALET MARTINEZ <[email protected]> >>>wrote: >>>> Hi Lorenzo, >>>> >>>> I don’t have an Android, so I can’t try myself, unfortunately, so I’m just >>>> replicating what several folks told me in a training (people from >>>> different ISPs, not just one). >>>> >>>> I’ve asked already a few days ago for more info, but still didn’t got it. >>>> I also asked to open a bug report as Erik suggested as well as the rdisc6 >>>> from the same LAN. >>>> >>>> Let me try to write it down again the issue: >>>> >>>> 1) ISP NOT providing IPv6, but CPE supports IPv6, which can be seen in the >>>> router configs and the routers has link local, and you can ping with link >>>> local to the router in the LAN. Clearly, router has not GUA. >>>> >>>> 2) iPhone working fine. >>>> >>>> 3) Android fails to receive IPv4 push from whatsapp, Facebook, others, >>>> when screen is off. >>>> >>>> 4) Disabling IPv6 in the router the problem disappears. >>>> >>>> 5) Complains to ISPs are responded with “disable IPv6 in the router”, is >>>> not useful at all :-( >>>> >>>> I can provide links to web pages from at least one “big” ISP, where they >>>> talk about this, but is in Spanish … >>>> >>>> I will ping right now again for more info and come back asap. >>>> >>>> Thanks ! >>>> >>>> Regards, >>>> Jordi >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> -----Mensaje original----- >>>> De: <[email protected]> en >>>> nombre de Lorenzo Colitti <[email protected]> >>>> Responder a: <[email protected]> >>>> Fecha: lunes, 9 de mayo de 2016, 10:41 >>>> Para: Jordi Palet Martinez <[email protected]> >>>> CC: IPv6 Ops list <[email protected]> >>>> Asunto: Re: push apps failing in Android until you disable IPv6 >>>> >>>>>Jordi, >>>>>from your report it's not clear what the problem is. You say that the >>>>>problem disappears when IPv6 is disabled on the router, but then you say >>>>>that it also happens on an IPv4-only network. How can those statements >>>>>both be true? >>>>> >>>>>It's not usually possible to disable IPv6 on an Android device unless the >>>>>device is rooted, which usually involves installing a non-stock build >>>>>which may behave differently. >>>>> >>>>>Also, please clarify what device you're talking about. Stock Android >>>>>should not have this problem, but some OEMs are known to drop IPv6 packets >>>>>when the screen is off. >>>>> >>>>>Cheers, >>>>>Lorenzo >>>>> >>>>>On Sat, Apr 30, 2016 at 9:03 PM, JORDI PALET MARTINEZ >>>>><[email protected]> 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 >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>>> >
