Stack.V4V6Disconnect from the dual IPv4 and IPv6 stack. While this might take some time to complete, it can never result in an error.
udp t obtains a descriptor for use with the UDP module, usually to transmit traffic.
tcp t obtains a descriptor for use with the TCP module, usually to initiate outgoing connections.
ip t obtains a descriptor for use with the IP module, which can handle raw IPv4 and IPv6 frames, or manipulate IP address configuration on the stack interface.