Public bug reported:
Description: Ubuntu Resolute Raccoon (development branch)
Release: 26.04
After installing the ubuntu-desktop package on an installation from the Ubuntu
server installation image, netplan ignores the "network.renderer" value in
/etc/netplan/00-installer-config.yaml and assumes that it is NetworkManager
(even though I also manually uninstall and mask the NetworkManager package). I
normally set renderer to be "networkd" like this in the YAML netplan file:
network:
render: networkd
ethernets:
(etc.)
And this has worked fine for all our 24.04 installations. But now in 26.04, the
renderer value is somehow ignored and replaced with NetworkManager:
netplan get network.renderer
results in:
NetworkManager
even though "networkd" is specified in the YAML netplan file as mentioned
above. Following up with a "netplan generate" and "netplan apply" results in an
error trying to start the NetworkManager (from "netplan apply"):
Failed to start NetworkManager.service: Unit NetworkManager.service is
masked.
But if I add a renderer value inside the stanza for a defined interface like
this:
netplan set network.ethernets.enp1s0.renderer="networkd"
then "netplan generate" and "netplan apply" work as expected and do not display
any error messages.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: netplan.io 1.1.2-8ubuntu1
ProcVersionSignature: Ubuntu 6.17.0-8.8-generic 6.17.2
Uname: Linux 6.17.0-8-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Dec 17 15:56:14 2025
InstallationDate: Installed on 2025-12-15 (2 days ago)
InstallationMedia: Ubuntu-Server 26.04 LTS "Resolute Raccoon" - Daily amd64
(20251124)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: netplan.io
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2136774
Title:
netplan renderer is forced to be NetworkManager when ubuntu-desktop is
installed
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