...
BugZero found this defect 1617 days ago.
In the preferred network rules, you would like to specify IP ranges for the Microsoft Hyper-V server or Off-host backup proxy other than those received by DNS resolution.
By default, Veeam Backup & Replication stores only the IP addresses for Hyper-V hosts that DNS provides.
Enabling the following setting will cause Veeam Backup & Replication to collect the IP addresses of all NICs on the Microsoft Hyper-V server(s) or Off-host backup proxy instead of only collecting via DNS. Key Location: HKLM\SOFTWARE\Veeam\Veeam Backup and Replication\Value Name: HvCollectAllHostAddressesValue Type: DWORD (32-Bit) ValueValue Data: 1 After this registry value is created on the Veeam Backup Server, rescan the Hyper-V Hosts to update the recorded IP addresses for the rescanned host.