Podľa Edgecore KB na ich webe:
When a port receives a general query, it will become mrouter port dynamically and the timer will start to count down from 300s (5 min).
A naozaj, po odchyte IGMP požiadaviek, TP-Link router posiela do WANu IGMPv3 Membership query, general, aj keď je prepnutý do v2 - to je blbosť nie?
Edgecore podľa výpisu show ip igmp snooping má vypnutý Multicast Router Discovery. A aj napriek tomu sa učí mrouter dynamicky. Druhá blbosť?
Podľa https://support.edge-core.com/hc/en-us/articles/360023412074-ES3528MV2-Supports-Multicast-IP-IGMP-Snooping-How-to-enable-Query-Function- :
After the Query function on SW1 is enabled, the port 28 connected to multicast router is still served as mrouter port until the timer of dynamic mrouter port is expired. [...] Since SW1 is the Query, mrouter port is no longer exists.
Samozrejme, po zapnutí querier funkcie dynamic port zostáva v tabuľke. Tretia blbosť?