March 15, 2025

Port 53 Used By systemd-resolved

sudo nano /etc/systemd/resolved.conf

[Resolve]
DNS=1.1.1.1
#FallbackDNS=
#Domains=
#LLMNR=no
#MulticastDNS=no
#DNSSEC=no
#DNSOverTLS=no
#Cache=no
DNSStubListener=no
#ReadEtcHosts=yes

sudo ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf

sudo systemctl restart systemd-resolved

//to verify if port got freed
sudo lsof -i :53