# ss -tulpn '( sport == 53 )'
Netid State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
udp UNCONN 0 0 127.0.2.1:53 0.0.0.0:* users:(("dnscrypt-proxy",pid=1224,fd=9),("systemd",pid=1,fd=47))
tcp LISTEN 0 4096 127.0.2.1:53 0.0.0.0:* users:(("dnscrypt-proxy",pid=1224,fd=8),("systemd",pid=1,fd=44))