Forum Discussion
What MAC address
Create a new virtual switch and connect the management OS to it: New-VMSwitch -Name 'Ext' -AllowManagementOS $true -NetAdapterName 'Prod' A new VMNetworkAdapter was created, get name and MAC addr...
Hi, When creating a virtual switch with the -AllowManagementOS option, a VMNetworkAdapter for the management OS is generated; the assigned MAC address is not taken from the pool visible with Get-VMHost but is generated from an internal, separate pool, ensuring distinct management and preventing conflicts with VM addresses.
That was my assumption. Now, when I have 2 Hyper-V servers, and I configure them equally (vSwitch with -AllowManagementOS) it could theoretically happen that the auto-created VMNetworkAdapters have the same MAC addresses ('cause there's no way to control the mechanism how the MAC address is generated). I can imagine that a router then may have issues when seeing the same MAC addresses on both sides...
