I had a working setup and it was broken by update. The config file was modified/recreated/whatever. I don't know what was exactly written in this file before update and no backup was created.
In any case, update must not break working config, especially on LTS version. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu. https://bugs.launchpad.net/bugs/1930103 Title: isc-dhcp-server overwrites /etc/default/isc-dhcp-server during update Status in isc-dhcp package in Ubuntu: New Bug description: Today unattended upgrade of ISC DHCPD overwrite config file /etc/default/isc-dhcp-server and set wrong interface where daemon have to listen (eno2 instead of br0 as was set before update). I see no backup file of original config file so I had to investigate where the problem was. Update have to never overwrite config file and throw away previous version. /var/log/apt/history.log: Start-Date: 2021-05-28 06:17:41 Commandline: /usr/bin/unattended-upgrade Upgrade: isc-dhcp-server:amd64 (4.4.1-2.1ubuntu5, 4.4.1-2.1ubuntu5.20.04.2) End-Date: 2021-05-28 06:17:47 root@linux:~# ls -l /etc/default/isc-dhcp-server -rw-r--r-- 1 root root 629 May 28 06:17 /etc/default/isc-dhcp-server To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1930103/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
