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is it normal that a wireguard docker container provides "low" networkspeed for connecting containers? (discuss.tchncs.de)

submitted 1 year ago* (last edited 1 year ago) by bruchsturm@discuss.tchncs.de to c/selfhosted@lemmy.world

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I'm using a wireguard docker container to provide vpn connection to a qbittorrent container. When I compare it to wireguard on linux and the qbittorrent application, the same torrent is way slower. My server gets 2Mbit/s and my computer 15Mbit/s The 15Mbit/s is where my internet connection caps, while downloading that fast I can't watch YT videos. They both are in the same network using the same vpn provider and same endpoint.

for qbittorrent docker-compose I use network_mode: service:wireguard

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[–] Guilvareux@feddit.uk 3 points 1 year ago

It depends how wireguard is implemented.

The container may be running wireguard in userspace, instead of the OS’s kernel implementation.

[–] funkajunk@lemm.ee 1 points 1 year ago

Can you please share your compose file?

I personally use a separate container instead of another service, not sure what difference it makes

network_mode: "container:wireguard"

Using the lscr.io/linuxserver/wireguard:latest image btw

[–] bruchsturm@discuss.tchncs.de 1 points 1 year ago

kinda fixed it, I think...

Checked what image I'm using, its linuxserver, and they're using the OS's kernel implementation. Also saw that in my logs.

I used this https://www.linuxserver.io/blog/routing-docker-host-and-container-traffic-through-wireguard and added these lines into my wg0.conf:

PostUp = iptables -t nat -A POSTROUTING -o wg+ -j MASQUERADE
PreDown = iptables -t nat -D POSTROUTING -o wg+ -j MASQUERADE

Then I regenerated my mullvad config with a different server.

Now I'm downloading the Arch Linux iso with 11Mbit/s

Honestly I've no idea what exactly solved the problem, iptables, networks and routing still feels likes witchcraft to me most of the time.