Missing IP Address for some ESX servers - Vcenter DiscoveryIssue Some ESX servers discovered using Vcenter discovery are unable to populate the IP address data.CauseDns lookup is required to allow Vcenter discovery to collect the IP address information otherwise it will fail and the IP addresses will not show. This is most evident in some DMZ environments where some customers do not allow DNS lookups.ResolutionCustomers must allow dns lookup as a pre-requisite for ESX host IP address collection.