This was fixed earlier today but now it's broken again: C:\Documents and Settings\falk>tracert6 dns.postel.org Tracing route to dns.postel.org [3ffe:801:1000:0:2d0:b7ff:c0de:1] from 2001:460:410:8128:18c:96f9:d68f:25af over a maximum of 30 hops: 1 2001:460:410:8128::1 reports: Destination address unreachable. Trace complete.