kazulog@sv1:~$ cat /etc/os-release | head -2
PRETTY_NAME="Ubuntu 26.04 LTS"
NAME="Ubuntu"
kazulog@sv1:~$ grep -n "daytime\|discard" /etc/inetd.conf
17:#discard		stream	tcp6	nowait	root	internal
18:#discard		dgram	udp6	wait	root	internal
19:daytime		stream	tcp6	nowait	root	internal
kazulog@sv1:~$ sudo systemctl restart inetutils-inetd
kazulog@sv1:~$ systemctl is-active inetutils-inetd
active
kazulog@sv1:~$ sudo ss -tlnp 'sport = :13'
State              Recv-Q             Send-Q                          Local Address:Port                           Peer Address:Port             Process
LISTEN             0                  10                                          *:13                                        *:*                 users:(("inetutils-inetd",pid=3158,fd=4))