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Date: Mon, 17 Aug 2020 10:39:00 +0200 From: Bjørn Mork <bjorn@...k.no> To: Linus Lüssing <linus.luessing@...3.blue> Cc: netdev@...r.kernel.org, Nikolay Aleksandrov <nikolay@...ulusnetworks.com>, Roopa Prabhu <roopa@...ulusnetworks.com>, bridge@...ts.linux-foundation.org, gluon@...beck.freifunk.net, openwrt-devel@...ts.openwrt.org, "David S . Miller" <davem@...emloft.net> Subject: Re: [RFC PATCH net-next] bridge: Implement MLD Querier wake-up calls / Android bug workaround Linus Lüssing <linus.luessing@...3.blue> writes: > Currently there are mobile devices (e.g. Android) which are not able > to receive and respond to MLD Queries reliably because the Wifi driver > filters a lot of ICMPv6 when the device is asleep - including > MLD. This in turn breaks IPv6 communication when MLD Snooping is > enabled. However there is one ICMPv6 type which is allowed to pass and > which can be used to wake up the mobile device: ICMPv6 Echo Requests. This is not a bug. They are deliberately breaking IPv6 because they consider this a feature. You should not try to work around such issues. It is a fight you cannot win. Any workaround will only encourage them to come up with new ways to break IPv6. Bjørn
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