We have a 3 Azure VM PostgreSQL cluster under the same subnet. We want to use Pgpool and connect to the master node through a delegate IP (virtual IP). However, when a node gets the delegate IP only that node can PING it, other 2 nodes can’t see this IP. We think that the problem is related to ARP and read somewhere that ARP is blocked on Azure Vnet. Is this true? How can we enable it?