Expected Behaviour:
The DNS server working after latest upgrade.
- Raspbian 13
- Raspberry Pi
Actual Behaviour:
The DNS server in the GUI says it has failed in red letters, and indeed it does not work.
Pi-hole should use port 53, but this port is already in use:
2026-05-13 18:51:42.625 MDT [2688M] CRIT: Error in dnsmasq configuration: failed to create listening socket for port 53: Address in use