Use !scan-port-ip6 to scan UDP, TCP, and SCTP ports on hosts in the IPv6 Internet.
You can also use !scan-port in place of !scan-port-ip6
Pass to !scan-port-ip6 an IPv6 address, a port number, and a protocol type. TCP is used if the protocol type is omitted.
Use !scan-port-ip6 to debug connectivity, firewall, and NAT issues on Internet Services.There are many IPduh !scan commands but most of them may return cached-stale results which are no suitable for real-time debugging and experiments. !scan-port and !scan-port-ip6 will always show you fresh scan results.
Like most IPduh commands, !scan-port-ip6 is an independent implementation, hence it may help you see something that other tools may miss.