Just for completeness, I configured 6to4 to get IPv6 working.
Both EPSV and EPRT work with IPv6.
ftp> ls
---> EPSV
229 Entering Extended Passive Mode (|||10283|)
---> LIST
150 Here comes the directory listing.
drwxrwxr-x 265 6060 48 8192 May 05 15:12
concluded-wg-ietf-mail-archive
..
and
ftp> ls
---> EPRT |2|2002:c014:e128::1|56420|
200 EPRT command successful. Consider using EPSV.
---> LIST
150 Here comes the directory listing.
drwxrwxr-x 265 6060 48 8192 May 05 15:12
concluded-wg-ietf-mail-archive
..
Bill
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