lftp 192.168.0.199:~> debug
lftp 192.168.0.199:~> ls
---- Connecting to 192.168.0.199 (192.168.0.199) port 21
<--- 421 Service not available.
**** remote end closed connection
---- Closing control socket
Interrupt
lftp 192.168.0.199:~> debug
lftp 192.168.0.199:~> ls
---- Connecting to 192.168.0.199 (192.168.0.199) port 21
<--- 421 Service not available.
**** remote end closed connection
---- Closing control socket
Interrupt