Handles the scenario of radio technology handover with IP continuity. Once RIL/Modem finished a handover operation, an unsol data call state change will be send up to FW notifying all link propertes changes. FW will then re-configure the device with new link properties including iptable used by Tethering. Change-Id: I05e29f66ac3db8ba4274d3662642607742ba1d12