b2add48d2a
Implement a configurable MLD Querier wake-up calls "feature" which works around a widely spread Android bug in connection with IGMP/MLD snooping. 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. If this bridge is the selected MLD Querier then setting "multicast_wakeupcall" to a number n greater than 0 will send n ICMPv6 Echo Requests to each host behind this port to wake them up with each MLD Query. Upon receiving a matching ICMPv6 Echo Reply an MLD Query with a unicast ethernet destination will be sent to the specific host(s). Link: https://issuetracker.google.com/issues/149630944 Link: https://github.com/freifunk-gluon/gluon/issues/1832 Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> |
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| CONTRIBUTING.md | ||
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| README.md | ||
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