Re: [pim] [Mcast-wifi] Issues with MLD and Android powersaving / sleep mode...

Dino Farinacci <> Tue, 24 March 2020 21:47 UTC

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From: Dino Farinacci <>
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Date: Tue, 24 Mar 2020 14:47:47 -0700
Cc: Linus Lüssing <>,,
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To: Mark Smith <>
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Subject: Re: [pim] [Mcast-wifi] Issues with MLD and Android powersaving / sleep mode...
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> Android wakes up it isn't immediately issuing MLD joins for its
> existing IPv6 addresses. I'll have to think about which IPv6 RFC
> advice to do that is probably in, however I think it should be - every
> time an interface comes up with existing IPv6 addresses, it should be
> sending MLD Reports to join the Solicited Node Multicast groups for
> its addresses.
> Regards,

I have seen this problem too when running LISP on Android and iOS. And on an overlay, you don’t want a head-end to send MLD queries or IGMP queries to billions of nodes. This should be a periodic process from the phone for joined groups.