[Win] [WireGuard] interface failed to come 'up' possible resolution

[biggestsonicfan]

Greetings. I see a few issues here (not going to crosslink them all as some are ancient) have the following errors:

[warn] WireGuard interface failed to come 'up', exit code is '1'

I actually found the solution to my problem in similar issue completely different binhex repo here: binhex/arch-delugevpn#276 (comment)

Turns out, my docker is using WSL2, which I knew, but what I did know is that it was the "kernel isn't compiled with necessary netfilter targets or matches for iptables or nftables to work."

I followed the instructions here in my existing WSL2 distro and qbittorrent came up without a hiccup with Wireguard configured.

Hope this helps someone out there as I'm seeing a lot of problems when googling the issue, but very few solutions. Obviously if you're not using WSL2, this won't be of much help, however, cross-checking that your kernel has CONFIG_NETFILTER_XT_MATCH_CONNMARK still would not be a bad idea.

EDIT: You will also need to build and install modules to get rid of the following error:

 DEBG 'start-script' stderr output:
 modprobe: FATAL: Module iptable_mangle not found in directory /lib/modules/(kernelver)-microsoft-standard-WSL2+

EDIT2: To make the kernel from the image, you'll probably need to get the following dependencies: pacman -S git bc pahole