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Preferred network rules – specify IP ranges other than automatic DNS resolution receives

KB ID: 3140
Product: Veeam Backup & Replication
Version: Any
Published: 2020-04-06
Last Modified: 2021-07-23
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Challenge

In the preferred network rules, you need to specify IP ranges for Microsoft Hyper-V server or Off-host backup proxy other than ranges received by automatic DNS resolution.

Cause

By default Veeam Backup & Replication stores only the IP addresses for Hyper-V hosts that are resolved by DNS.

Solution

The following registry setting will enable Veeam Backup & Replication to collect IP addresses from all NICs on the Microsoft Hyper-V server(s) or Off-host backup proxy.

Key Location: HKLM\SOFTWARE\Veeam\Veeam Backup and Replication\
Value Name: HvCollectAllHostAddresses
Value Type: DWORD
Value Data: 1

Rescan the Hyper-V Hosts after the registry value is created on the Veeam Backup & Replication server to update the configuration database.

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