SV: Samsung phones block WiFi IPv6 when sleeping, delayed notifications

Eric Vyncke (evyncke) evyncke at
Thu Jun 11 22:38:51 CEST 2015

Please read some IETF draft related to NDP/multicast/WiFi issues (Lorenzo
is very active there).

Multicast RA are not really needed anyway, some 'high market' (see my
email address) AP have dozens of tricks to reply to RS with a UNIcast RA,
and trying to reduce the amount of NDP mcast.

If you want to measure by yourself:
which will display basic summary of all your mcast IPv6 traffic.

And bear in mind that every WiFi mcast frame wakes up ALL your WiFi device
and is sent at the lowest rate (wasting bandwidth) ;-)

On 10/06/15 02:20, "erik.taraldsen at"
<erik.taraldsen at> wrote:

> > I see that. I don’t think the problem is confined to Samsung or that
>it can be completed solved in isolation from fixing wireless AP router
>> At the edge of the WiFi network I also see the IPv6 connectivity
>>dropping while IPv4 stays up. I’ve a ZyXEL home router that sends
>>periodic RAs every 15 seconds
>> and a Huawei home router that sends them every 1800 seconds.
>Any opinions on what a sane default value for what the RA interval should
>be?  I have not conserned myself with that interval before, but I see
>that the residential devices we ship are on a very low interval.
>Erik Taraldsen

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