this post was submitted on 12 Jun 2025
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Debian (12/13): Wireguard VPN-client (suppo.fi)
submitted 1 day ago by 7dev7random7@suppo.fi to c/linux@programming.dev
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So, I imported my connection-configuration provided from OPNsense Wireguard VPN.

The connection is working on an old (<10 years) Android Phone. But from within Linux (same config) I am unable to resolve subnet ip addresses. I can still access the internet though.

So; Am I using my origin connection to resolve foreign ips or am I using my VPN DNS? Why am I unable to access my subnet ip addresses on my linux machine?

The Linux machine is 6.13.30-arm64 with /etc/debian_version pointing to 13.0.

I have installed wireguard-tools and network-manager only. I have also wireguard installed but it doesn't make a difference and its usage is for hosting a endpoint.

Again: It works for other machines like intended. If of concern: I am running XFCE.

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[โ€“] xylol@leminal.space 2 points 23 hours ago (1 children)

you added the wireguard config to /etc/wireguard/wg0.conf?

[โ€“] 7dev7random7@suppo.fi 2 points 17 hours ago

Yes. Then I imported said config additionally via nmcli connection import type wireguard file /etc/wireguard/wg0.conf which may be duplication.