Differences

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--- computer:network:wireguard [2021/11/15 06:34] – ↷ Links adapted because of a move operation springm
+++ computer:network:wireguard [2025/06/05 05:43] (current) – spring
@@ Line 1: / Line 1: @@
+====== Setup ======
   * see also https://www.bachmann-lan.de/raspberry-pi-mit-wireguard-als-vpn-server-mit-wireguard/
   * lokale Kopie {{:raspberry_pi_mit_wireguard_als_vpn_server_bachmann-lan.de_2020-04-10_21_05_58_.html}}
+===== DNS-Refresh für Ubuntu 24 Client =====
+To refresh or update the DNS server settings used by a WireGuard client on Ubuntu 24.04, you need to ensure both your WireGuard configuration and your system's DNS resolver are correctly set up. Ubuntu 24.04 uses systemd-resolved by default, which changes how DNS settings are applied compared to older releases.
+Use systemd-resolved with PostUp (Recommended for Ubuntu 24.04)
+The DNS = ... line in the config is only processed if the system is set up to use resolvconf or openresolv. On Ubuntu 24.04, systemd-resolved is the default resolver and does not process the DNS = ... line automatically
+Instead, use a PostUp command in your config to set the DNS server via resolvectl:
+  [Interface]
+  PrivateKey = ...
+  Address = ...
+  # DNS = 10.10.0.2
+  PostUp = resolvectl dns %i 10.10.0.2
+  PostUp = resolvectl domain %i ~.
+  PostDown = resolvectl revert %i
+This tells systemd-resolved to use the specified DNS server for the WireGuard interface when it comes up, and to revert the setting when the interface goes down
+Restart wireguard to apply settings
+. Verify DNS Settings
+Check the DNS settings applied to your WireGuard interface:
+  resolvectl status wg0
+Look for the DNS Servers line to confirm your changes took effect
+==== OrangePi ====
   apt install -y linux-headers-current-sunxi qrencode dirmngr
   apt install -y wireguard-tools