Public bug reported:
Hi,
Running Ubuntu 24.04 with netplan.io/netplan-generator 1.0-2ubuntu1.
I use a systemd unit to mount an NFS filesystem. That unit should only
be activated when the network is ready. However, it looks like network-
online.target is reached before netplan-configured interfaces are up, so
the unit triggers too early and sometimes fail (because it cannot
resolve the name of the remote server).
I configured netplan manually with:
```
# cat /etc/netplan/01-netcfg.yaml
---
network:
version: 2
renderer: networkd
ethernets:
eno1:
dhcp4: true
```
I see the following during boot:
```
Apr 27 23:31:28 localhost systemd[1]: Starting systemd-networkd.service -
Network Configuration...
Apr 27 23:31:28 localhost systemd-networkd[1190]: lo: Link UP
Apr 27 23:31:28 localhost systemd-networkd[1190]: lo: Gained carrier
Apr 27 23:31:28 localhost systemd-networkd[1190]: Enumeration completed
Apr 27 23:31:28 localhost systemd-networkd[1190]: eno1: Configuring with
/run/systemd/network/10-netplan-eno1.network.
Apr 27 23:31:28 localhost systemd[1]: Started systemd-networkd.service -
Network Configuration.
Apr 27 23:31:28 localhost systemd[1]: Reached target network.target - Network.
Apr 27 23:31:28 localhost systemd[1]: systemd-networkd-wait-online.service -
Wait for Network to be Configured was skipped because of an unmet condition
check
(ConditionPathIsSymbolicLink=/run/systemd/generator/network-online.target.wants/systemd-networkd-wait-online.service).
Apr 27 23:31:28 localhost systemd[1]: Reached target network-online.target -
Network is Online.
Apr 27 23:31:28 localhost systemd[1]: Reached target remote-fs-pre.target -
Preparation for Remote File Systems.
Apr 27 23:31:28 localhost systemd[1]: Mounting grid5000.mount - /grid5000...
Apr 27 23:31:28 localhost systemd-networkd[1190]: eno1: Link UP
Apr 27 23:31:28 localhost systemd-networkd[1190]: eno1: Gained carrier
Apr 27 23:31:28 localhost systemd-networkd[1190]: eno1: DHCPv4 address
172.16.66.53/20, gateway 172.16.79.254 acquired from 172.16.79.107
Apr 27 23:31:28 localhost systemd[1]: Starting networkd-dispatcher.service -
Dispatcher daemon for systemd-networkd...
Apr 27 23:31:29 gros-53 systemd[1]: Starting rpc-statd.service - NFS status
monitor for NFSv2/3 locking....
Apr 27 23:31:29 gros-53 rpc.statd[1439]: Version 2.6.4 starting
Apr 27 23:31:29 gros-53 rpc.statd[1439]: Flags: TI-RPC
Apr 27 23:31:29 gros-53 rpc.statd[1439]: Failed to read /var/lib/nfs/state:
Success
Apr 27 23:31:29 gros-53 rpc.statd[1439]: Initializing NSM state
Apr 27 23:31:29 gros-53 systemd[1]: Started rpc-statd.service - NFS status
monitor for NFSv2/3 locking..
Apr 27 23:31:29 gros-53 mount[1441]: Created symlink
/run/systemd/system/remote-fs.target.wants/rpc-statd.service →
/usr/lib/systemd/system/rpc-statd.service.
Apr 27 23:31:29 gros-53 systemd[1]: Reloading requested from client PID 1441
('systemctl') (unit grid5000.mount)...
Apr 27 23:31:29 gros-53 systemd[1]: Reloading...
Apr 27 23:31:30 gros-53 systemd[1]: Reloading finished in 194 ms.
Apr 27 23:31:30 gros-53 systemd[1]: Mounted grid5000.mount - /grid5000.
Apr 27 23:31:30 gros-53 nfsrahead[1497]: setting /grid5000 readahead to 128
The key message here seems to be:
Apr 27 23:31:28 localhost systemd[1]: systemd-networkd-wait-online.service -
Wait for Network to be Configured was skipped because of an unmet condition
check
(ConditionPathIsSymbolicLink=/run/systemd/generator/network-online.target.wants/systemd-networkd-wait-online.service).
Why doesn't netplan generate that symlink? It seems it does generate it, but
only later, when systemd reloads at 23:31:29 (according to 'stat' on the
symlink).
It worked fine with Ubuntu 22.04:
"systemd[1]: Reached target Network is Online."
only appears after the interface got configured via DHCP.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: netplan.io 1.0-2ubuntu1
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
ApportVersion: 2.28.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
Date: Sat Apr 27 23:50:37 2024
InstallationDate: Installed on 2024-04-26 (1 days ago)
InstallationMedia: Ubuntu-Server 24.04 LTS "Noble Numbat" - Release amd64
(20240423)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm
XDG_RUNTIME_DIR=<set>
SourcePackage: netplan.io
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: netplan.io (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2063973
Title:
network-online.target is reached before netplan-configured interfaces
are online
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