ftp.netfilter.org and IPv6

[Pascal Hambourg <pascal.mail@xxxxxxxxxxxxxxx>]

Hello,

ftp.netfilter.org has an AAAA record which resolves to the IPv6 address 
2001:780:45:1d:20d:93ff:fe9b:e443. But surprisingly it seems that the 
FTP port (21/TCP) on this address is closed. Is this normal ? On the 
other hand the HTTP port (80/TCP) is opened, but I would expect the FTP 
port on a host called ftp.something to be opened.