[BusyBox] ftpput generates "ALLO error: Unknown command."

[Robert P. J. Day]

  using 1.00-pre7, my first attempt at testing ftpput, and i got

./ftpput -v -u rday -p rday scout /tmp ~/t.log
Connecting to scout[10.1.1.11]:21
ftpput: cmd (null)(null)
ftpput: cmd USER rday
ftpput: cmd PASS rday
ftpput: cmd TYPE I(null)
ftpput: cmd PASV(null)
ftpput: cmd CWD /tmp
ftpput: cmd ALLO 11814(null)
ftpput: ALLO error: Unknown command.

  i've googled and got very little in the way of pointers.
suggestions welcome, while i'm rooting around in the source
file.

rday