I've now closed down the trusted old Relay6 on my server.
If you want to make an IPv6 connection with 2:203/0 you'd better be using the correct nodelist info since circa a month ago.
..
--- Mozilla/5.0 (Windows; U; Windows NT 5.1; sv-SE; rv:1.9.1.16) Gecko/20101125
* Origin:
news://eljaco.se (2:203/2)