Hi everyone,

I'm trying to set up a VPN in a namespace, so I could use my base network connection as usual and at the same time spawn console or browser in that namespace where VPN is running. So far I've sorted out everything except DNS resolution. Inside namespace there is no systemd-networkd, so if my /etc/resolv.conf does not contain a valid external DNS server then DNS inside the namespace does not work. And since VPN tries to dynamically update /etc/resolv.conf (and with latest vpnc-script updates - actually communicates with systemd-resolved via busctl), I should not hardcode values in there. Openconnect inside a namespace is able to (somehow) talk with root namespace's systemd-networkd via busctl but systemd-resolved reports that "link X is not known", which is probably expected - this link is inside the namespace. So my ask is - can I somehow use systemd-resolved with such setup? I tried starting a separate process of systemd-resolved inside namespace directly and got:

Failed to register name: File exists
Could not create manager: File exists

Can I somehow change the dbus name used by resolved, and this way I could edit vpnc-script to use the modified name..? Looks like it's not possible but maybe I overlooked something.

Please share your thoughts!

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