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this post was submitted on 20 Oct 2024
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Network namespaces!
ip exec namespace command
One namespace for surfshark, and anything you run in that namespace uses those rules
Network namespaces and policy based routing are black magic, IMO.
I've got a VPN set up on my router and separate VLANs set up for ordinary traffic and VPN traffic. A device doesn't need to support VPNs at all, I just connect it to the VPN VLAN and all its traffic goes over the VPN whether it likes it or not. I've got separate wifi SSIDs for each VLAN.
My desktop is connected to both VLANs with a network namespace set up for the VPN VLAN, so
sudo vpn rtorrentruns rtorrent in the namespace that's connected to the VPN VLAN.My setup is nice, but I wouldn't recommend it to anyone who doesn't want to learn quite a bit about networking.
Code dump for the curious?
I mean, it's bits of configuration all over the place that I've built up over time. It isn't a single script on one machine, and you'd need to change a lot of things if you weren't running Slackware. I can't really copy and paste it all.
Wait WHAT. Thank you.
Apologies for the slow reply :)
I'm reading up on this at the moment. If I'm understanding it correctly, I would run that command to launch a program, but could I use it for something that launches at startup?
My Minecraft and Qbittorrent instances start automatically, so could I change them to something like
ip netns exec vpn ~/qbittorrent/start.sh
ip netns exec clear ~/minecraft/start.sh
or change the application's autostart Command box to ip netns exec vpn qbittorrent %U if the current entry is just qbittorrent %U
Do these make sense?