Edit the /etc/vmware/esx.conf file with vi and change the vmk management interface MAC to something else and it will work.
If you do not have easy access to the back panel, you can get the appliance’s serial number by logging on to the LOM port. The MAC address of the vmk management interface of the nested ESXi will be equal to the 'physical' MAC address of the VMXNET3 interface. The serial number is on the back panel of the appliance. You can use range-based allocation to include or exclude ranges of Locally Administered Addresses (LAA). A Media Access Control address (MAC address) is a unique identifier assigned to network interfaces for communication on the physical network segment. You can use prefix-based allocation to specify an OUI other than the default one 00:50:56 by VMware, or to introduce Locally Administered MAC Addresses (LAA) for a larger address space. VMware Organizationally Unique Identifier (OUI) allocation assigns MAC addresses based on the default VMware OUI 00:50:56 and the vCenter Server ID. I knew the MAC address 00:50:56 was a VMware virtual machine because 00:50:56 are assigned to VMware as MAC address Organisational Unique Identifiers (OUI). If you reconfigure the network adapter of a powered off virtual machine, for example, by changing the automatic MAC address allocation type or setting a static MAC address, vCenter Server resolves MAC address conflicts before the adapter reconfiguration takes effect.įor information about resolving MAC address conflicts, see the vSphere Troubleshooting documentation. The first three pairs of a MAC address is granted to a vendor or manufacturer. For non-persistent pools and for VMs that haven’t yet been assigned to a user, a recompose operation will be performed as delete-then-recreate resulting in MAC address change. While this virtual machine has been powered off, its MAC address has been assigned to another virtual machine that has been powered on. In VMware View 4.5 and later if a VM is assigned to a user their MAC address is retained after recompose operations. The change might be caused by an address conflict with another virtual machine. When a virtual machine is powered on again, it might acquire a different MAC address. The MAC address of a powered off virtual machine is not checked against the addresses of running or suspended virtual machines. VCenter Server does not allocate MAC addresses when provisioning a virtual machine. Note: If you use invalid prefix- or range-based allocation values, an error is logged in the