Suedkiez
(Just a fellow user like you)
2
You might have to enable NAT-T as well:
Server-type connections (such are the Roon Core acting as a server) might need this on Zyxel routers:
Wikipedia on NAT-T:
And the manual for your router (in “8.4 The UPnP Screen”):
– https://download.zyxel.com/VMG3625-T50B/user_guide/VMG3625-T50B_1.pdf
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