Cannot see Minimserver anymore for UPNP/DLNA

[streamer99]

Thank you. On reviewing my network again, a small and insignificant looking switch that I had more or less forgotten was configurable had a single setting applied - igmp snooping.
You won't be surprised that unsetting that seems to have done the trick.
A few years ago we had BT TV which used multicast and required some igmp snooping settings when used with non-BT router and this may be the reason for the setting I had forgotten.