コントローラのハードウェアアップグレードの実行中に、ノードへの参加を解除できません

ハードウェアヘッドのアップグレード手順の実行中にノードへの参加を解除しようとすると、次のエラーが表示されます。

 ::*> cluster unjoin -node naXXXXX-02 Failed to delete failover-group "e0M" because it is still in use by the following LIFs: <vserver: naXXXXX, LIF: cluster_mgmt>. Reassign these LIFs to use a new failover-group, then retry the cluster unjoin operation. ::*> network interface delete -vserver Cluster -lif naXXXXX-02_clus1 Warning: Deleting a cluster LIF can disrupt the Cluster network. Are you sure you want to continue? {y|n}: y Error: command failed: LIF "naXXXXX-02_clus1" cannot be removed because it is required to maintain quorum on node "naXXXXX-02". ::*> network interface modify -vserver svm-test1 -lif svm-test1_lif1 -home-node naXXXXX -home-port a0a-20 Warning: The configured failover-group has no valid failover targets for the LIF's failover-policy. To view the failover targets for a LIF, use the "network interface show -failover" command. ::*> network interface failover-groups remove-targets -vserver naXXXX -failover-group 10.1.32.0/24 -targets naXXXXX-02:e0M Error: command failed: Failover group "10.1.32.0/24" cannot be modified because it is automatically generated by broadcast domain "10.1.32.0/24".