The concept of Multicast membership is owned by the kernel. ptp4l does not, and can not, send IGMP packets.
Denny > On Feb 22, 2022, at 08:10, Jakub Raczyński > <[email protected]> wrote: > > But I want to ask, should ptp4l monitor this rather than send only IGMP join > packets at the start? Because I can see devices blatantly ignoring > 'Membership queries' under specific circumstances (showed in the logs). So > should ptp4l really depend on kernel or other drivers to work in such cases?
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