In June 2008, The Pirate Bay announced that their servers would support SSL encryption in response to Sweden's new wiretapping law. On 19 January 2009, The Pirate Bay launched IPv6 support for their tracker system, using an IPv6-only version of Opentracker. On 17 November 2009, The Pirate Bay shut off its tracker service permanently, stating that centralised trackers are no longer needed since distributed hash tables (DHT), peer exchange (PEX), and magnet links allow peers to find each other and content in a decentralised way.