Med Java

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====== NetworkManager DNS Configuration ======

Configure NetworkManager DNS settings to use reliable DNS servers (Google DNS + local router) while preventing automatic DHCP overwrites. \\ 
This ensures stable DNS resolution for both general networking and Docker operations.

===== Main Commands =====
<code>
sudo nmcli con mod p8p1 ipv4.dns "8.8.8.8 8.8.4.4 192.168.1.1"
sudo nmcli con mod p8p1 ipv4.ignore-auto-dns yes
sudo nmcli con up p8p1
</code>

===== Explanations =====

First command sets DNS servers in preferred order:
  * 8.8.8.8 - Google primary DNS (fast and stable)
  * 8.8.4.4 - Google secondary DNS (backup)
  * 192.168.1.1 - Local router DNS (fallback)

Second command prevents DHCP DNS overwriting:
  * ipv4.ignore-auto-dns yes - ignores automatically received DNS
  * Maintains complete control over DNS configuration
  * Prevents unwanted interference

Third command activates new settings:
  * Applies changes to network interface
  * Reloads NetworkManager configuration
  * Updates /etc/resolv.conf

===== Verification =====

To verify configuration:
<code>
nmcli con show p8p1 | grep dns
cat /etc/resolv.conf
</code>

<note>
  * Replace ''p8p1'' with your network interface name
  * You can see available interfaces with ''nmcli con show''
  * Configuration persists after reboot
  * Helps resolve Docker image pull issues and DNS resolution problems.
</note>