Many warnings : prevented from using mac address because it is pinned to port

Hi
I am seeing my system log flooded (several per second) with event 28 warnings such as :
Port 'SWITCHPORT-SM-DB9DCFC7-E98D-438C-8998-CC0D9C14ED2B-1-1' was prevented from using MAC address '00-15-5D-00-B2-05' because it is pinned to port 'A0724966-695B-4552-B'.
Source : VMSMP
The environment is 2 X hyper-v 2008 r2 hosts. both have 4 NICs, 3 nics are connected to virtual switches and management OS is not allowed to share the network adapter, and then 1 NIC is obviously used by the host/mgmt OS and no virtual switch connected to
it. I am seeing the warnings on both hosts.
No load balancing or NIC teaming.
All VM's have their MAC addresses assigned dynamically and I cannot see any conflicting MAC addresses.
The warnings are logged for all or most of the MAC addresses and alternate between different "SWITCHPORT-SM-etc,etc" names.
Performance doesn't seem to be degraded, I've run continuous pings for more than an hour with no packet loss, just a single packet spike every now and then. Network access seems fine, Backup Exec 2012 jobs are succeeding, albeit somewhat slower than what
it was.
I don't know when it started, since these warnings have flooded out all else.
At first I thought it had something to do with a VM that I moved from one host to the other, where I copied the VHD accross and then created a new VM and assigned the original IP address to the new virtual NIC in the new VM. I then uninstalled the old hidden
NIC and restarted the VM in question, but that didn't stop the warnings.
Any ideas what could be causing this, or any tips on where I should start looking to isolate the cause ?

Got it fixed by creating new virtual switches, moving all VMs over to them, and afterwards deleting all the old virtual switches.
Still no idea what the cause could have been. How bizarre...

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Hi,
"is there any permanent solution to override pxe aborted ,even systems are known to SCCM ,we are in sccm 2012 infrastructure"
I think there is not a permanent solution.
It could help if you first run the configuration manager report to locate a particular MAC address.
Best Regards,
Joyce
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HT1343 how do i switch from using mac to windows?

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R72Sully wrote:
My main concern is, what happens if I decide not to renew my .mac account a year or two from now, and all my purchased music is under that Apple ID? I'm a bit afraid of this because who knows if I'll still need .mac a couple years down the road. I still want to be able play the music I bought and paid for.
Hi RJ.
First of all... Congratulations on your new toy! They are great!
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posted by: ihshan

On both my iPad and iPhone 5 I can no longer play music from my synched iTunes selections from my Mac mini because when I select a playlist it will only play afew songs and then quit the playlist, skipping around a lot.

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bigsavz wrote:
To be honest I don't need a lot of people commenting on this. I need Apple to comment ...
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http://www.apple.com/feedback
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Many warnings : prevented from using mac address because it is pinned to port

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