What is teredo?

Teredo is a tunneling protocol designed to facilitate the transmission of IPv6 packets over IPv4 networks. It enables IPv6 connectivity for devices that are behind NAT (Network Address Translation) devices, making it especially useful for users who cannot directly access IPv6 networks. By encapsulating IPv6 packets within IPv4 UDP packets, Teredo allows for seamless communication and helps bridge the gap between the two protocols during the transition to a fully IPv6 internet.