FTP Operation Over Big Address Records (FOOBAR)
This RFC specifies a method for assigning addresses other than 32-bit IPv4 addresses to data ports through the specification of a "long Port (LPRT)" command and "Long Passive (LPSV)" reply, each having as its argument a, which allows for additional address families, variable length network addresses and variable length port numbers. This memo defines an Experimental Protocol for the Internet community.