Overlay network movement operations

A computer program product for providing virtual network domain movement operations, the computer program product comprising a computer readable hardware storage device having program code embodied therewith, the program code readable/executable by a processor to perform a method comprising:

• determining, by a physical network interface controller (NIC), overlay network attributes (ONAs) for a plurality of virtual networks, wherein the ONAs comprise a network identifier and tunnel information;
• associating by the physical NIC, the ONAs to the plurality of virtual networks;
• managing, by the physical NIC, the ONAs as portable entities by creating ONAs, deleting ONAs, moving ONAs, combining ONAs and dividing ONAs;
• and
• performing a movement operation, by the physical NIC, comprising re-assigning the virtual networks to servers of overlay networks based on the management of the ONAs.

A system comprising:

• a hardware layer comprising a physical network interface controller (NIC);
• virtual switches each associated with at least virtual machines (VMs) overlaying the hardware layer;
• and
• a first server,
• wherein the NIC determines overlay network attributes (ONAs) for a plurality of virtual networks, associates the ONAs with the plurality of virtual networks, manages the ONAs as portable entities by creating ONAs, deleting ONAs, moving ONAs, combining ONAs and dividing ONAs, and performs a movement operation comprising re-assigning the virtual networks to servers of overlay networks based on management of the ONAs, and the ONAs comprise a network identifier and tunnel information.