Stacken has been operating an IPv6 network since 1997.
First, we had a 6bone connection with static routing. Some years later, we changed this to a multihomed BGP connection.
Today, the IPv6 tests have been replaced by a semi-production connection from KTHLAN. Most of our machines, including the web and ftp servers, are IPv6 capable, and you can use IPv6 to log in to the TokKOM system.