The Teredo server listens on UDP port 3544. At Microsoft, Huitema was involved with the development of 6to4 and Teredo tunneling. Teredo tunneling was also frequently used for integrating IPv6 LANs with the IPv4 Internet backbone. Teredo should be disabled when native IPv6 connectivity becomes available. Teredo servers can also transmit ICMPv6 packet from Teredo clients toward the IPv6 Internet. This provides a short path between their IPv6 network and any Teredo client. Other types of tunnels can be set up include&colon; 6over4, Teredo, ISATAP, PortProxy. The initial nickname of the Teredo tunneling protocol was "Shipworm". They were riddled with tubes made by burrowing teredo worms. Teredo is not compatible with all NAT devices. This species is the type species of the genus "Teredo". No treatment of timber to prevent attack by "Teredo navalis" has been completely successful. The insulation could be eaten, for instance, by species of "Teredo" (shipworm) and "Xylophaga". A Teredo relay potentially requires much network bandwidth. It is expected that large network operators will maintain Teredo relays.