Upon ESX patch upgrade from version VMware ESXi-8.0.3d-24585383 to VMware ESXi-8.0.3-24784735, the virtual machine fails to connect over the network when a network is assigned to it.

Products

• VMware vSphere ESXi

Issue/Introduction

• Upon ESX patch upgrade from version VMware ESXi-8.0.3d-24585383 to VMware ESXi-8.0.3-24784735, you may experience the virtual machine fails to connect over the network when a network is assigned to it.
  
  
• You may observe change in vmnic's enumeration/alias such as vmnic0-vmnic2 prior to ESX patch upgrade changes to vmnic1-vmnic3 post ESX patch upgrade.

Environment

VMware vSphere ESXi 8.x

Resolution

Workaround :

Compare the mac-address of the physical adapters (vmnic's) from an older reference prior to ESX patch upgrade and accordingly map the uplink to the vSwitch.

Example :

Before ESX patch upgrade (vmnic's enumeration was vmnic0-vmnic2) :

vswitch0 : vmnic0
vswitch1 : vmnic1
vswitch2 : vmnic2

After ESX patch upgrade (vmnic's enumeration was vmnic1-vmnic3) :

vswitch0 : vmnic1
vswitch1 : vmnic2
vswitch2 : vmnic3

To facilitate a comprehensive understanding of the potential contributing factors for the observed behavior, it is recommended that a support ticket be submitted to Broadcom Support, designating VMware vSphere ESXi as the relevant product.

Handling Log Bundles for offline review with Broadcom support. It is essential to obtain the ESXi diagnostic information, from the host both prior to and following any ESXi upgrade.

• Collecting diagnostic information for VMware ESXi using vSphere Client
• Uploading files to cases on the Broadcom Support Portal
• Creating and managing Broadcom support cases

Additional Information

For additional information please refer How VMware ESXi determines the order in which names are assigned to devices