Public bug reported: After upgrading Kubuntu from Ocular (24.10) to Plucky (25.04), I could not retrieve an IP address from my corporate network which requires the user-class (option 77) to be set in the dhclient configuration file.
Before the upgrade I was able to get an IP address from the DHCP server through NetworkManager that was set to use the dhclient (isc-dhcp-client package installed) and with the following lines in the configuration [main] dhcp=dhclient see https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/configuring_and_managing_networking/configuring- networkmanager-dhcp-settings_configuring-and-managing- networking#proc_changing-the-dhcp-client-of-networkmanager_configuring- networkmanager-dhcp-settings Everything worked well up until network-manager 1.48.8-1ubuntu3 (Ocular / 25.10) But with the recent upgrade to Plucky/25.10 and network-manager 1.52.0-1ubuntu1 there seems to be a regression as I cannot request an IP address anymore with the same configuration Here are the errors in syslog 2025-05-05T08:06:49.162450+02:00 myhost NetworkManager[1116]: <warn> [1746425209.1623] dhcp: init: DHCP client 'dhclient' not available 2025-05-05T08:06:49.162551+02:00 myhost NetworkManager[1116]: <info> [1746425209.1623] dhcp: init: Using DHCP client 'internal' and no IP address is assigned to my network card (wired) NB: there is no IPv6 at stake, only IPv4 address is assigned the isc-dhcp-client is in version 4.4.3-P1-4ubuntu2 since 24.04 (LTS/Noble) and no newer version exists, so it doesn't seem to be the culprit unfortunately, I have to still rely on ISC DHCP client as this is the only way to configure the user-class option here is the line I need in the /etc/dhcp/dhclient.conf send user-class "blabla-XXXX"; ** Affects: network-manager (Ubuntu) Importance: Undecided Status: New ** Tags: plucky -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/2109975 Title: NetworkManager cannot work in conjonction with dhclient (isc-dhcp- client) after Plucky/25.04 upgrade Status in network-manager package in Ubuntu: New Bug description: After upgrading Kubuntu from Ocular (24.10) to Plucky (25.04), I could not retrieve an IP address from my corporate network which requires the user-class (option 77) to be set in the dhclient configuration file. Before the upgrade I was able to get an IP address from the DHCP server through NetworkManager that was set to use the dhclient (isc- dhcp-client package installed) and with the following lines in the configuration [main] dhcp=dhclient see https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/configuring_and_managing_networking/configuring- networkmanager-dhcp-settings_configuring-and-managing- networking#proc_changing-the-dhcp-client-of- networkmanager_configuring-networkmanager-dhcp-settings Everything worked well up until network-manager 1.48.8-1ubuntu3 (Ocular / 25.10) But with the recent upgrade to Plucky/25.10 and network-manager 1.52.0-1ubuntu1 there seems to be a regression as I cannot request an IP address anymore with the same configuration Here are the errors in syslog 2025-05-05T08:06:49.162450+02:00 myhost NetworkManager[1116]: <warn> [1746425209.1623] dhcp: init: DHCP client 'dhclient' not available 2025-05-05T08:06:49.162551+02:00 myhost NetworkManager[1116]: <info> [1746425209.1623] dhcp: init: Using DHCP client 'internal' and no IP address is assigned to my network card (wired) NB: there is no IPv6 at stake, only IPv4 address is assigned the isc-dhcp-client is in version 4.4.3-P1-4ubuntu2 since 24.04 (LTS/Noble) and no newer version exists, so it doesn't seem to be the culprit unfortunately, I have to still rely on ISC DHCP client as this is the only way to configure the user-class option here is the line I need in the /etc/dhcp/dhclient.conf send user-class "blabla-XXXX"; To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/2109975/+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
