Why NetworkManager reports ip-config-unavailable?

Solution Verified - Updated -

Environment

  • RedHat Enterprise Linux(7 and above)
  • kernel 3.10.0-327.el7.x86_64 and above
  • NetworkManager

Issue

  • Why NetworkManager reports ip-config-unavailable?

  • Error shows while adding ip address:

 May 14 09:11:14 servera NetworkManager[675]: <info>  (ens8): device state change: ip-config -> secondaries (reason 'ip-config-unavailable') [70 90 5]

 May 14 09:03:27 serverb NetworkManager[695]: <info>  [1684047807.5263] device (ens9): state change: ip-config -> failed (reason 'ip-config-unavailable', sys-iface-state: 'managed')

  • Unable to add an IP address.

  • dhcp lease failed

Resolution

The NetworkManager reports ip-config-unavailable on two reasons and are mentioned below:

  • When ipv4.method is set to disabled, follow below steps to allow NetworkManager to configure the IPs via auto of manual.

    Method 1:

    nmcli connection modify <con-name> ipv4.method auto
nmcli connection up <con-name>

    Method 2:

    nmcli connection modify <con-name> ipv4.method manual ipv4.address <IP>/subnet 
nmcli connection up <con-name>

  • When ipv4.method is auto, then a failed dhcp lease could also trigger these warnings. Check for any dhcp lease issues with dhcp server.

Root Cause

  • The ipv4.method is disabled for the connection hence no ipv4 configuration is available for the interface. This restricts the access to add the IP address. When changing the ipv4.method to auto or manual, then onwards it allows making changes in the IP address for the interface.

  • Failed dhcp lease could trigger these warning.

Diagnostic Steps

  • Check logs for the interface

    cat /var/log/messages | grep ens8 | tail -n 1
May 14 09:11:14 servera NetworkManager[675]: <info>  (ens8): device state change: ip-config -> secondaries 
(reason 'ip-config-unavailable') [70 90 5]

    cat /var/log/messages | grep ens8 | tail -n 1
May 14 09:03:27 serverb NetworkManager[695]: <info>  [1684047807.5263] device (ens9): state change: ip- 
config -> failed (reason 'ip-config-unavailable', sys-iface-state: 'managed')

  • Check if the interface has disabled the ipv4.method or not.

    [root@servera ~]# nmcli connection show ens8 | grep ipv4.method
ipv4.method:                            disabled<-------

    [root@serverb ~]# nmcli connection show ens9 | grep ipv4.method
ipv4.method:                            disabled<-------

  • Check if dhcp lease failed:

    Nov 11 07:36:51 xyz.com NetworkManager[1024]: <info>  [1731328611.3903] dhcp4 (bond0): activation: beginning transaction (timeout in 45 seconds)
Nov 11 07:37:00 xyz.com NetworkManager[1024]: <info>  [1731328620.6556] audit: op="connections-load" args="/etc/sysconfig/network-scripts/ifcfg-bond0" pid=1478 uid=0 result="success"
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.6129] device (bond0): state change: ip-config -> failed (reason 'ip-config-unavailable', sys-iface-state: 'managed')
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <warn>  [1731328656.6134] device (bond0): Activation: failed for connection 'bond0'
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.6741] device (bond0): detached bond port enp1s0
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.7914] device (bond0): detached bond port enp9s0
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.8518] device (bond0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.8549] dhcp4 (bond0): canceled DHCP transaction
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.8549] dhcp4 (bond0): activation: beginning transaction (timeout in 45 seconds)
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.8549] dhcp4 (bond0): state changed no lease
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.8753] device (bond0): state change: disconnected -> unmanaged (reason 'user-requested', sys-iface-state: 'managed')
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.8756] policy: auto-activating connection 'bond0' (1df4d00c-2760-4ca6-8d6c-90d58240b5df)
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.9434] device (bond0): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external')
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.9437] device (bond0): state change: unavailable -> disconnected (reason 'user-requested', sys-iface-state: 'managed')
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.9439] device (bond0): Activation: starting connection 'bond0' (1df4d00c-2760-4ca6-8d6c-90d58240b5df)
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.9440] device (bond0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.9459] device (bond0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Nov 11 07:37:36 xyz.com NetworkManager[1024]: <info>  [1731328656.9461] device (bond0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
Nov 11 07:37:37 xyz.com NetworkManager[1024]: <info>  [1731328657.1270] device (bond0): attached bond port enp1s0
Nov 11 07:37:37 xyz.com NetworkManager[1024]: <info>  [1731328657.2419] device (bond0): attached bond port enp9s0
Nov 11 07:37:39 xyz.com NetworkManager[1024]: <info>  [1731328659.3461] device (bond0): carrier: link connected
Nov 11 07:37:39 xyz.com NetworkManager[1024]: <info>  [1731328659.3463] dhcp4 (bond0): activation: beginning transaction (timeout in 45 seconds)
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.6132] device (bond0): state change: ip-config -> failed (reason 'ip-config-unavailable', sys-iface-state: 'managed')
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <warn>  [1731328704.6143] device (bond0): Activation: failed for connection 'bond0'
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.6810] device (bond0): detached bond port enp1s0
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.7986] device (bond0): detached bond port enp9s0
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.8564] device (bond0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.8629] dhcp4 (bond0): canceled DHCP transaction
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.8629] dhcp4 (bond0): activation: beginning transaction (timeout in 45 seconds)
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.8629] dhcp4 (bond0): state changed no lease
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.8775] device (bond0): state change: disconnected -> unmanaged (reason 'user-requested', sys-iface-state: 'managed')
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.8778] policy: auto-activating connection 'bond0' (1df4d00c-2760-4ca6-8d6c-90d58240b5df)
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.9558] device (bond0): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external')
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.9561] device (bond0): state change: unavailable -> disconnected (reason 'user-requested', sys-iface-state: 'managed')
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.9563] device (bond0): Activation: starting connection 'bond0' (1df4d00c-2760-4ca6-8d6c-90d58240b5df)
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.9564] device (bond0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.9567] device (bond0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Nov 11 07:38:24 xyz.com NetworkManager[1024]: <info>  [1731328704.9568] device (bond0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
Nov 11 07:38:25 xyz.com NetworkManager[1024]: <info>  [1731328705.1516] device (bond0): attached bond port enp1s0
Nov 11 07:38:25 xyz.com NetworkManager[1024]: <info>  [1731328705.2662] device (bond0): attached bond port enp9s0
Nov 11 07:38:27 xyz.com NetworkManager[1024]: <info>  [1731328707.3535] device (bond0): carrier: link connected
Nov 11 07:38:27 xyz.com NetworkManager[1024]: <info>  [1731328707.3537] dhcp4 (bond0): activation: beginning transaction (timeout in 45 seconds)
Nov 11 07:39:12 xyz.com NetworkManager[1024]: <info>  [1731328752.6130] device (bond0): state change: ip-config -> failed (reason 'ip-config-unavailable', sys-iface-state: 'managed')

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