The value of vRtrIfGreTermination specifies whether the user can terminate MPLS-over-GRE as well as IP-over-GRE packets concurrently on the system interface address or an address from an user defined subnet. When the value is set to 'true', GRE packet termination will happen concurrently to the system interface IPv4 address and to any address that falls in the subnet of the interface primary IPv4 address. This is only applicable to network interfaces and there can be only one network interface with GRE termination enabled in the virtual router. When the value is set to 'false', GRE packet termination can only happen to the system interface IPv4 address. When this interface is unnumbered GRE termination will be enabled to the subnet of the primary IPv4 address of the parent interface.