I recently lost a host at one of my sites which have a failover policy set of IP Hash. No problem, connect a new host remotely and add it back to the network. Problem is, I cannot access this host from vCenter because of this policy. After posting on Reddit, someone gave me the following command to enter via CLI
You will need to enable the CLI from the console -> troubleshooting options.
esxcli network vswitch standard portgroup policy failover set -p "Management Network" -l iphash
Once this is set, you should now be able to see your host from vCenter.