Using IPv6 on your Tor relay

Tor has partial IPv6 support, and relay operators are encouraged to enable IPv6 alongside IPv4 when possible. However, Tor still requires an IPv4 address to run a relay.

Tor has partial support for IPv6 and we encourage every relay operator to enable IPv6 functionality in their torrc configuration files when IPv6 connectivity is available. For the time being Tor will require IPv4 addresses on relays, you can not run a Tor relay on a host with IPv6 addresses only.