I have a Linux Mint box that I installed Plex on. That seems to be working fine. I have a Roku 4 in the other room that can see the Plex server but only indirectly. Both are on the same WiFi network, although one is on the 2.4 Ghz band and the other on the 5 Ghz band.
I haven't been able to find a reason for why the Roku Plex client can't see the local server. Anybody have any ideas on this?
The router is an AT&T U-Verse BGW210-700.