Server NIC issue

[mdrabble]

Not quite sure where to put this so please move if needed.

 

I have 3 Hyper-V hosts all running Server 2012r2 with Intel X520-DA2 cards.

 

At some point over the weekend the VMs on my 3rd Host migrated off that server due to a NIC issue.

 

Looking at the NIC settings all Hyper-V Nics (Management, Live Migration, Cluster, Etc) have reverted to DHCP - no idea why as no updates have be applied. The other 2 hosts are fine.

 

This is where it gets strange..... The management vNIC has picked up a DHCP but the other vNICs say DHCP assigned BUT they have retained their statically assigned IP Addresses

 

I set the vNICs back to static and enter the IP details and when I look at the Server Management details they have reverted back to DHCP assigned

 

 

Anyone any ideas?