Veröffentlicht am von ron

Linux: a start job is running for wait for Network to be configured

A new linux-VM takes ages to boot:

  • it waits for 2 minutes for the network to come up
Linux: Boot-Delay – network not up
  • Whats the reason for the delay?

„routable“ interfaces with not router-address provided by the dhcp-service never come up for the „networkd-wait-online“-service.

find more information at GitHub Issue 3752 – systemd-networkd can’t configure interface if dhcp server does not provide routers

administrator@lx-ubuntu:~$ networkctl
IDX LINK             TYPE               OPERATIONAL SETUP
  1 lo               loopback           carrier     unmanaged
  2 enp0s3           ether              routable    configuring
  3 enp0s8           ether              routable    configured

3 links listed.

State: forever „configuring“ not „configured“

administrator@lx-ubuntu:~$ networkctl status enp0s3
2: enp0s3
       Link File: /lib/systemd/network/99-default.link
    Network File: /run/systemd/network/10-netplan-enp0s3.network
            Type: ether
           State: routable (configuring)
            Path: pci-0000:00:03.0
          Driver: e1000
          Vendor: Intel Corporation
           Model: 82540EM Gigabit Ethernet Controller (PRO/1000 MT Desktop Adapter)
      HW Address: 08:00:27:37:db:ef (PCS Systemtechnik GmbH)
         Address: 192.168.56.101
                  fe80::a00:27ff:fe37:dbef
  • Background information

„enp0s3“ is a virtual-box „host-only“ network with no routing provided

VirtualBox – host-local network

  • Action Plan: „Set this interface to not be checked.“
  1. locate the systemd-unit-file:

    2. Path: /run/systemd/generator/network-online.target.wants
    File: systemd-networkd-wait-online.service

  2. Edit (sudo) file
  3. add „ignore“-Option

    4. docs: networkd wait online service

sudo vi /run/systemd/generator/network-online.target.wants/systemd-networkd-wait-online.service

The service specific configuration options are configured in the „[Service]“ section.

[Service]
Type=oneshot
ExecStart=/lib/systemd/systemd-networkd-wait-online --ignore=enp0s3
RemainAfterExit=yes
  • reboot

Now the VM boots like lightning.

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