Cannot connect - "unrecognized domain / treating as non-local"

Plex Media Server
1

Server Version#: 1.25.3.5409 (OpenSuse Leap 15.3)

Recently revamped our home network’s IPs away from 192.168.0.X to avoid conflicts when connecting via VPN. Did not play nicely with PMS it seems.

Problem: cannot access the web interface from any clients except localhost & no player apps can find server.

Logs show:

“Request came in with unrecognized domain / IP ‘X.X.X.100’ in header Host; treating as non-local”

List of IP addresses and networks that are allowed without auth: X.X.X.1/255.255.255.0

How can I make Plex recognize the request as “local”? Thanks!

2

PMS requires RFC-1918 compliant IP address ranges.

192.168.x.x
10.x.x.x
172.16.x.x → 172.31.x.x

3

Thanks Chuck! Duh. My addressing scheme was too clever by half, apparently.

Changed to 10.X.X.X and all is well. Appreciate your help!