C:\WINDOWS\system32>netsh interface Teredo show state
Teredo Parameters
---------------------------------------------
Type                    : natawareclient
Server Name             : win1901.ipv6.microsoft.com.
Client Refresh Interval : 20 seconds
Client Port             : unspecified
State                   : qualified
Client Type             : teredo client
Network                 : unmanaged
NAT                     : cone
NAT Special Behaviour   : UPNP: Yes, PortPreserving: Yes
Local Mapping           : 192.168.254.3:56486