Hi Guys,
I got the following error on an HP ML180 g6 server which hosts a single 2003 guest:
Port 'SWITCHPORT-SM-9A3E1BCC-1D22-42EA-BA42-3DCC42C9EC53-0-1' was prevented from using MAC address '00-15-5D-64-08-01' because it is pinned to port '39CFB32B-2760-461D-B'.
No changes were made to either of the servers or to their near environment - after almost a year and a half of flawless operation, this issue came completely out of the blue.
I tried recreating the virtual network, updating network drivers and even removing and adding the Hyper-V role again, but the issue wasn't resolved.
I then moved the 2003 guest to another HP ML350 g5 server, and I get the same error.
HP servers' NICs are NOT teamed, and I disabled all TCP/UDP offloading.
What might it be?...
EDIT: both hosts are 2008 R2