VAMI hostname or IP change fails with error: "The specified IP address does not resolve to the specified hostname"

Products

• VMware vCenter Server

Issue/Introduction

- When attempting to change either the hostname or the IP address and VLAN of a vCenter Server Appliance (VCSA) via the vCenter Server Appliance Management Interface (VAMI), the network edit wizard fails.

- A pre-check validation warning is displayed: "The specified IP address does not resolve to the specified hostname."

- The IP modification is blocked and cannot proceed.

Environment

vSphere vCenter Server 7.x

vSphere vCenter Server 8.x

Cause

During a network reconfiguration, the VCSA performs forward and reverse DNS lookups against the configured DNS servers. If the new IP address or hostname is not fully resolvable to the existing vCenter Primary Network Identifier (PNID/FQDN) prior to committing the network change, the VAMI validation framework blocks the update to prevent internal service registration failures.

Resolution

1. Perform a full file-based backup and take an offline snapshot of the vCenter Server Appliance.

2. Update the DNS Forward (A) and Reverse (PTR) records on the active corporate DNS servers to point the existing vCenter FQDN to the new target IP address.

3. Verify DNS resolution from the VCSA CLI using nslookup to ensure the new IP address is returned.

4. Log into the VAMI at https://<REDACTED_HOSTNAME>:5480 using root credentials.

5. Navigate to Networking > Network Interfaces > Edit.

6. Expand the management network adapter (NIC 0), update the IPv4 settings, Subnet Mask, Gateway, and assign the new VLAN ID (or change the hostname as needed).

7. Enter the Single Sign-On (SSO) administrator credentials to authorize the identity mapping updates and complete the wizard.

 

Additional Information

Update or Change vCenter Server Appliance Hostname/Fully Qualified Domain name (FQDN)/PNID

Failed to change vCenter Server's hostname in VAMI