And there it was. I'm running a VPN client on the port forwarded target machine. If I turn that off, everything is working as expected. Someday I'll learn not to change 10 things at the same time...
Sorry for waisting your time but thanks for the help!
Tried it. No luck.
I think it was 384.8_2 but I'm not sure.
Thing is the external IP is working from inside the network. To my understanding, the request is routed through the gateway (Merlin's LAN-interface), then to the WAN-interface, back to LAN with the forwarding rules. If this is correct...
Thanks. I did find it after I had done the reset. I should have read the whole thread before, as you suggested. :)
I have to set wireless in Legacy mode to unset it though.
It does have a public IP.
The ports are 22, 80, 443. I did a pcap dump on the target machine for port 22 and I saw nothing. I don't know if there are any tools for inspecting packages on Merlin but I didn't find pcap. It's possible my ISP is doing something fishy but it was working prior to the...
Thank you for the welcome martinr!
I've now gone through all the steps* and I still can't get port forwarding to work but I can ping it (it's possible that worked before).
If a do an online nmap scan it says filtered on my forwarded ports. I didn't do one when it was working so I don't know if...