Samsung phones block WiFi IPv6 when sleeping, delayed notifications

Jeremy Visser jeremy at
Wed Jun 10 14:42:45 CEST 2015

On 10/06/15 18:23, Lorenzo Colitti wrote:
> are *all* IPv6 packets blocked, or just multicast packets? I know
> that a number of devices will drop multicast IPv6 packets.

On that note, some wireless access points have the ability to convert multicast packets into unicast packets.  Both the Cisco and HP systems I have access to support this.

Believe it or not, it’s actually billed as an optimisation, as unicast packets generally use a faster modulation than multicast.  Makes sense, because if you send only one copy of a packet wirelessly, all devices (even the ones with the crappiest signals) need to be able to receive it reasonably reliably.

If that option is available to you, and if this is specific to multicast, this may be an interesting hack.

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