Twin directories of .etc:

[DIR]  ftp://ftp.cse.buffalo.edu/.etc/
[DIR]  ftp://ftp.hands.com/hands-deb/.etc/
[DIR]  ftp://ftp.cs.rmit.edu.au/.etc/
[DIR]  ftp://ftp.tek.com/.etc/
[DIR]  ftp://ftp.multitech.com/.etc/
[DIR]  ftp://ftp.polito.it/.etc/