Public bug reported:
Start by noting (On a fresh install, at least) that WakeOnLan=off in
/run/systemd/network/*.link :
[Match]
PermanentMACAddress=00:0c:29:82:3a:e9
[Link]
Name=ens33
WakeOnLan=off
Then, remove the Subiquity generated file /etc/netplan/00-installer-config.yaml
on fresh installs. Remove /etc/netplan/*.yaml on non-fresh installs.
Reboot.
Note there are no files at /run/systemd/network/*.link (As expected)
Then, use Identity tab in `gnome-control-center network` to rename the
connection (or use nm-connection-editor)
Reboot again.
Inspect /run/systemd/network/*.link and notice it now says
WakeOnLan=magic but WakeOnLan was left on Default
[Match]
OriginalName=ens33
[Link]
WakeOnLan=magic
Also inspect /etc/netplan/*.yaml and it will say wakeonlan: true
nm-connection-editor will say Wake On Lan = Default
Even if you try to set Wake On Lan = Ignore, inspect /etc/netplan/*.yaml
again, and it will have both:
wakeonlan: true
and
networkmanager:
passthrough:
ethernet.wake-on-lan: "32768"
and the link file will still contain WakeOnLan=magic
Additional thoughts:
gnome-control-center does not seem to have a GUI for Wake On Lan.
The Wakeonlan=magic being present in the .link files seems to contribute
to boot race condition causing NIC devices to randomly fall back to
kernel name (eth0) instead of path name (ens33, enp37s0, etc)
ProblemType: Bug
DistroRelease: Ubuntu 26.10
Package: netplan.io 1.2.2-1
ProcVersionSignature: Ubuntu 7.3.0-8.8-generic 7.3.0-rc5
Uname: Linux 7.3.0-8-generic x86_64
ApportVersion: 2.36.0-0ubuntu1
Architecture: amd64
CasperMD5CheckMismatches: ./boot/grub/i386-pc/eltorito.img
CasperMD5CheckResult: fail
CurrentDesktop: ubuntu:GNOME
Date: Sun Oct 4 15:49:25 2026
InstallationDate: Installed on 2026-04-03 (185 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Daily amd64 (20260331)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: netplan.io
UpgradeStatus: Upgraded to stonking on 2026-09-25 (10 days ago)
** Affects: netplan.io (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug stonking third-party-packages wayland-session
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https://bugs.launchpad.net/bugs/2169503
Title:
Netplan unexpectedly changes WakeOnLan from Off to Magic when a
Network profile is renamed
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