ftp://ftp.cuhk.hk/.1/doc/  direct

[DIR]vms/  direct  4489+ twin directories
[DIR]ripe/  direct  58 twin directories
[DIR]networking/  direct  2476+ twin directories
[DIR]ipng/  direct  73 twin directories
[DIR]internic-reg/  direct  2 twin directories
[DIR]internet/  direct  1242+ twin directories
[DIR]inet93/  direct  2 twin directories
[DIR]digital/  direct  5860+ twin directories
[DIR]Athena/  direct  39 twin directories