kazulog@sv1:~$ cat /etc/os-release | head -2
PRETTY_NAME="Ubuntu 26.04 LTS"
NAME="Ubuntu"
kazulog@sv1:~$ sudo apt install -y inetutils-inetd | cat
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

Reading package lists...
Building dependency tree...
Reading state information...
Solving dependencies...
Installing:
  inetutils-inetd

Installing dependencies:
  tcpd  update-inetd

Summary:
  Upgrading: 0, Installing: 3, Removing: 0, Not Upgrading: 96
  Download size: 92.8 kB
  Space needed: 361 kB / 63.1 GB available

Get:1 http://archive.ubuntu.com/ubuntu resolute/universe amd64 tcpd amd64 7.6.q-36build2 [24.6 kB]
Get:2 http://archive.ubuntu.com/ubuntu resolute/main amd64 update-inetd all 4.54build1 [23.0 kB]
Get:3 http://archive.ubuntu.com/ubuntu resolute-updates/universe amd64 inetutils-inetd amd64 2:2.7-2ubuntu1.1 [45.2 kB]
Preconfiguring packages ...
Fetched 92.8 kB in 1s (62.2 kB/s)
Selecting previously unselected package tcpd.
(Reading database ... 91400 files and directories currently installed.)
Preparing to unpack .../tcpd_7.6.q-36build2_amd64.deb ...
Unpacking tcpd (7.6.q-36build2) ...
Selecting previously unselected package update-inetd.
Preparing to unpack .../update-inetd_4.54build1_all.deb ...
Unpacking update-inetd (4.54build1) ...
Selecting previously unselected package inetutils-inetd.
Preparing to unpack .../inetutils-inetd_2%3a2.7-2ubuntu1.1_amd64.deb ...
Unpacking inetutils-inetd (2:2.7-2ubuntu1.1) ...
Setting up update-inetd (4.54build1) ...
Setting up tcpd (7.6.q-36build2) ...
Setting up inetutils-inetd (2:2.7-2ubuntu1.1) ...
Created symlink '/etc/systemd/system/inetd.service' → '/usr/lib/systemd/system/inetutils-inetd.service'.
Created symlink '/etc/systemd/system/multi-user.target.wants/inetutils-inetd.service' → '/usr/lib/systemd/system/inetutils-inetd.service'.
Processing triggers for man-db (2.13.1-1build1) ...
Scanning processes...
Scanning linux images...

Running kernel seems to be up-to-date.

No services need to be restarted.

No containers need to be restarted.

No user sessions are running outdated binaries.

No VM guests are running outdated hypervisor (qemu) binaries on this host.
kazulog@sv1:~$ ls -l /etc/inetd.conf /etc/inetd.d
-rw-r--r-- 1 root root 1062 Sep 12 09:46 /etc/inetd.conf

/etc/inetd.d:
total 0
kazulog@sv1:~$ cat /etc/inetd.conf
# /etc/inetd.conf: see inetd(8) for further informations.
#
# Internet superserver configuration database.
#
#
# Lines starting with "#:LABEL:" or "#<off>#" should not
# be changed unless you know what you are doing!
#
# If you want to disable an entry so it is not touched during
# package updates just comment it out with a single '#' character.
#
# Packages should modify this file by using update-inetd(8).
#
# <service_name> <sock_type> <proto> <flags> <user> <server_path> <args>
#
#:INTERNAL: Internal services
#discard		stream	tcp6	nowait	root	internal
#discard		dgram	udp6	wait	root	internal
#daytime		stream	tcp6	nowait	root	internal
#time		stream	tcp6	nowait	root	internal

#:STANDARD: These are standard services.

#:BSD: Shell, login, exec and talk are BSD protocols.

#:MAIL: Mail, news and uucp services.

#:INFO: Info services

#:BOOT: TFTP service is provided primarily for booting.  Most sites
#       run this only on machines acting as "boot servers."

#:RPC: RPC based services

#:HAM-RADIO: amateur-radio services

#:OTHER: Other services

kazulog@sv1:~$ systemctl status inetutils-inetd --no-pager | head -8 | cat
○ inetutils-inetd.service - GNU Network Utilities internet superserver
     Loaded: loaded (/usr/lib/systemd/system/inetutils-inetd.service; enabled; preset: enabled)
     Active: inactive (dead) (Result: exec-condition) since Sat 2026-09-12 09:46:26 JST; 7s ago
 Invocation: 1648d08c1ead40689a99100fac11824a
  Condition: start condition unmet at Sat 2026-09-12 09:46:26 JST; 7s ago
       Docs: man:inetutils-inetd(8)
             https://www.gnu.org/software/inetutils/manual/
    Process: 2617 ExecCondition=grep -qr ^[0-9A-Za-z/] /etc/inetd.conf /etc/inetd.d/ (code=exited, status=1/FAILURE)