Occasionally I see people mention gluetun.
- What’s gluetun? Seems like it’s a VPN client? What’s special about it?
- How do you use it in your setup?
- Do I need to know about this if I use Tailscale on the host for connecting to my VPN?
- Would gluetun allow me to use an additional VPN provider for certain apps without messing with the host Tailscale?


Is that 100% certain? I think I can recall stories from 15 years ago, where torrent clients had kill switches and they still leaked data.
That really depends on the implementation. In the case of gluetun, yes, no data can leak.
In Linux, by interface binding, no data can leak as well. No idea how Windows network stack is implemented.