nelsnelson [comrade/them, love/loves]

Via ChatGPT 4 (accuracy unverified):

Yes, you can configure systemd-resolved to use the DNS servers in the order provided without dynamically switching based on speed. Here’s how you can do it:

1. Edit the resolved configuration file:

   Open the resolved.conf file in a text editor:

   sudo nano /etc/systemd/resolved.conf
   

2. Modify or add the following line:

   DNS=`IP_of_pihole` `IP_of_mikrotik`
   DNSStubListener=no
   FallbackDNS=
   

   Replace IP_of_pihole and IP_of_mikrotik with your actual DNS IP addresses. This tells systemd-resolved to only use the DNS servers in the order you’ve specified.

3. Prevent automatic DNS changes by network manager:

   If you’re using NetworkManager, create a drop-in configuration to prevent it from overriding DNS settings:

   sudo mkdir -p /etc/NetworkManager/conf.d/
   sudo nano /etc/NetworkManager/conf.d/dns.conf
   

   Add the following content:

   [main]
   dns=none
   

4. Restart services:

   After making these changes, restart systemd-resolved and NetworkManager:

   sudo systemctl restart systemd-resolved
   sudo systemctl restart NetworkManager
   

This should ensure that your system uses the DNS servers in the order provided without any automatic switching.

This article is too short and shallow to be useful or interesting.