Slim::Networking::Slimproto::slimproto_accept (179) unauthorized host, accept denied:

I switched to a new ISP and afterwards LMS finds no players, not even Squeezelite (I'm using the Local Player plugin). And the server log fills up with the error message in the title above:

Slim::Networking::Slimproto::slimproto_accept (179) unauthorized host, accept denied:


Anyone have an idea why that is? I'm running LMS on a Windows 10 machine and always been using Local Player plugin. I can access internet from the server.

Thanks,

//J.