thierry@binova-srv:~$ sudo netstat -lnp | grep :53
tcp        0      0 127.0.0.53:53           0.0.0.0:*               LISTEN      1870/systemd-resolv
tcp6       0      0 :::53                   :::*                    LISTEN      1243/samba
udp        0      0 127.0.0.53:53           0.0.0.0:*                           1870/systemd-resolv
udp6       0      0 :::53                   :::*                                1243/samba