Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?

On a fresh Raspberry Pi OS Bullseye install isc-dhcp-server with "sudo apt install isc-dhcp-server".

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

Nothing as the error is reported immediately after installation.

   * What was the outcome of this action?

The installation log reports the following error:

pi@raspberrypi:~ $ sudo apt install isc-dhcp-server
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
...
Setting up isc-dhcp-server (4.4.1-2.3) ...
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Generating /etc/default/isc-dhcp-server...
Job for isc-dhcp-server.service failed because the control process exited with error code.
See "systemctl status isc-dhcp-server.service" and "journalctl -xe" for details.
invoke-rc.d: initscript isc-dhcp-server, action "start" failed.
● isc-dhcp-server.service - LSB: DHCP server
     Loaded: loaded (/etc/init.d/isc-dhcp-server; generated)
     Active: failed (Result: exit-code) since Tue 2022-03-29 08:32:17 BST; 49ms ago
       Docs: man:systemd-sysv-generator(8)
    Process: 4048 ExecStart=/etc/init.d/isc-dhcp-server start (code=exited, status=1/FAILURE)
        CPU: 80ms

Mar 29 08:32:15 raspberrypi dhcpd[4063]: before submitting a bug.  These pages explain the proper
Mar 29 08:32:15 raspberrypi dhcpd[4063]: process and the information we find helpful for debugging.
Mar 29 08:32:15 raspberrypi dhcpd[4063]:
Mar 29 08:32:15 raspberrypi dhcpd[4063]: exiting.
Mar 29 08:32:17 raspberrypi isc-dhcp-server[4048]: Starting ISC DHCPv4 server: dhcpdcheck syslog for diagnostics. ...
Mar 29 08:32:17 raspberrypi isc-dhcp-server[4068]:  failed!
...

   * What outcome did you expect instead?

I expected it either:
- to have a valid auto-generated configuration after installation
- the service to not be launched immediately after installation

Dear submitter,

as the package isc-dhcp has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/1143544

The version of this package that was in Debian prior to this removal
can still be found using https://snapshot.debian.org/.

Please note that the changes have been done on the master archive and
will not propagate to any mirrors until the next dinstall run at the
earliest.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmaster@ftp-master.debian.org.

Debian distribution maintenance software
pp.
Thorsten Alteholz (the ftpmaster behind the curtain)