If you ever wondered how to remove the physical NIC configuration on a Citrix XenServer machine, this is how you can do it:

xe pif-reconfigure-ip uuid=XXXXXXXXXXX mode=none

Where “XXXXXXXXXXX” is the uuid of the NIC to remove the configuration from, this can be either a NIC or a bond.  To find out the NIC/bond uuid you can run the following command:

xe pif-list