From
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10714&actp=search not clear what exactly to do (exclude upgrade up to new version of course).
set igmp-snooping vlan all version 2
This solves the problem or not?
Please explain "Disabling IGMPv3, falling back to IGMPv2, will mitigate this issue, but may result in reduced functionality (e.g. PIM source-specific multicast requires IGMPv3)."
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