Came across problem connecting to failover cluster service where the host was accessible but unable to connect to it via failover cluster manager.
Related to Microsoft Article on protecting against short-term network interruptions.
Failed the node over and then connected to the cluster and ran the below powershell against the cluster.
Enter-PSSession –ComputerName DMLCulsterServer
(Get-Cluster).CrossSubnetThreshold = 20
(Get-Cluster).SameSubnetThreshold = 20