Is UPnP a rubish protocol ???

[lyapounov]

(09-03-2022 15:05)simoncn Wrote:  IGMP proxy is different from IGMP snooping. A web search suggests that the C1200 supports IGMP snooping (see for example this page). Also, as there is a choice between IGMP v2 and v3, it is likely that the router is using IGMP snooping. Can you try a different router that has a configuration setting to disable IGMP snooping?

IGMP snooping is nowhere a parameter in my router. It may be enabled, but I have no way to change this.

I'll try another router when I am back home, in a few days.

By the way: just the fact that a well-known problem - conflict between IMGP snooping & UPnP discovery - has found no solution, does show, to my eyes, that UPnP is not a reliable protocole.

But there is no other open alternative, if I am right...