AirVPN, Debian 12, Deluge, Qbittorrent, MergerFS, WireGuard, Ubiquiti and 6 hours wasted

[fragzem 0]

Hello everybody. Thanks for clicking. 

I have a new Debian headless machine running. It's my first time with it, I've been using Ubuntu server and desktop for the past 7+  years.

I started with air VPN earlier this year. 

My Ubuntu machines are working great. No problem having the whole computer running through AirVPN using wire guard... And I Even successfully set up split tunneling/ip-tables to only have torrent traffic thru the VPN at one point. (Decided to revert back to whole machine on VPN)


I just wanted to say that to let you know that I'm not completely new to this. 


I've set up Radarr, Sonarr, Prowlar, Plex. The Debian machine also uses MergerFS. 

I can not for the life of me get anything to work on this computer with the VPN on. I didn't go to bed last night, my wife wanted to kill me. I spent 6 hours trying to get this going with Grok, Claude, ChatGPT.

I've tried Eddie CLI, WireGuard only. I've tried binding the adapter, binding the IP. Connections all refused.

I've tried port forwarding in the router even tho I never did for my other computers.

I'm really lost on this one. 

Has anybody run into any problems with a similar setup? Since I'm new to Debian, maybe it's something really stupid that I overlooked? I read that qbittorrent may have issues with mergerFS, so I'm trying transmission and deluge next.

Also, I'm very confused with the Eddie CLI and how to tell it what device I'm on so that it understands the port forwarding setup?

I'm going back in there now going to try OpenVPN instead and see if I can get any place. 

[crustacean 0]

Forget about Eddie. Described your setup,  on the machine that did not work. 

Post list of interfaces, routing table, any software configuration, do you have firewalld/ufw, AppArmor or SELinux. Turn them off for troubleshooing purposes. 

[trapexit 1]

Author of mergerfs here.

There are no problems with qbittorrent and mergerfs. I and many others use qbittorrent with mergerfs for many years.

What you are likely referring to is needing to ensure you have mergerfs setup for mmap support which qbittorrent, typically by default, requires. However, you can just enable necessary features to support mmap or disable usage of mmap by setting "Disk IO type" in qbittorrent to "POSIX-compliant" or "Simple pread/pwrite".