Can't connect to ftp.ipv6.nl

[Rene Mayrhofer]

Hi all

I have problems connecting to ftp.ipv6.nl. My upstream is Uni Münster and I have
no problems with other sites (e.g. www.6bone.net). What is wrong here ?

traceroute6 ftp.ipv6.nl
traceroute6 to ftp.ipv6.nl (3ffe:604:5:0:4::1) from
3ffe:400:1020:1:200:21ff:fed2:186e, 30 hops max, 16 byte packets
 1  pluto.ip6.vianova.at (3ffe:400:1020:1::)  0.525 ms  0.51 ms  0.441 ms
 2  vnserv.ip6.vianova.at (3ffe:400:1020::)  911.623 ms  1037.44 ms  1571.31 ms
 3  6bone.ipv6.uni-muenster.de (3ffe:401::2c0:33ff:fe02:14)  1227.66 ms  2086.76
ms  707.038 ms
 4  tun-JOIN-l.ipv6.fsz.bme.hu (3ffe:2f00:10::9)  2271.05 ms  522.607 ms *
 5  3ffe:600:8000:8::4d (3ffe:600:8000:8::4d)  1058.6 ms *
ir4.Amsterdam.surf.net (3ffe:600:8000::29)  2265.72 ms
 6  * * *
 7  * * *
 8  * * *
 9  * * *
10  * * *
11  * * *
12  * * * 
......

The problem persists since a few weeks I think.

best greets,
Rene Mayrhofer