Control can't see MinimServer after rescan until server Ethernet unplugged/replugged

[Bard]

Hello Simon

Thank you for responding so quickly. I've run a series of tests this morning with various conditions and actions. The end result is that Bubble now appears to continue to see the server after a rescan even with both its Ethernet and WiFi active (I say 'appears' in case this is somehow a fluke!) so I'm going to leave everything as it is unless a problem arises again.

In case my experience is helpful to anyone else with a similar problem, the significant actions were:

- remove the server's WiFi MAC address from the router filter list, disabling the WiFi connection and leaving the Ethernet active. Bubble didn't see the server immediately, but did after restarting it and the restarting the tablet - I don't know whether it was the app restart, tablet restart or simply lapse of time which restored visibility. (So the answers to Simon's questions are 'yes', and that Bubble could also see the server with only the Ethernet connection active.)
- restore the server WiFi MAC address to the router filter list. This should have restored the WiFi connection immediately (according to the router manual), but in fact I had to reboot the router. I'm not using fixed IP addresses, so that gave the server and most of the renderers new IP addresses and they disappeared from Bubble's list.
- reboot the server and PI-based renderers (and power cycle a commercial one). This restored the server and all the renderers to visibility in Bubble.

I hope I've remembered everything that matters, in the right order; I was checking connections with SSH and trying to work out what might be happening 'under the hood' after every change, and I didn't have the patience to make notes as well.

I can only imagine that somehow one or more parts of the system got confused enough to create the original problem (I don't know enough about networks to guess how), while leaving most things working, and the cure was basically to reboot everything. If Bubble had been unable to see the server at all I would have done that immediately, but with most things working I didn't think of it ...!