How to SSH into IPV6

May be a noob level question, but how can one ssh into a server via the ipv6 address? ssh user@3ffe:1900:4545:3:200:f8ff:fe21:67cf ssh -6 user@3ffe:1900:4545:3:200:f8ff:fe21:67cf This is what I try, but I get no network response. And the server is running. Also, not an actual ipv6 address. Just an example address from web

Thank you