hi
i m new to NCat and having issues with few options -g -G -s --sctp

here a brief summery:
<code>
-g                    ncat -g proxy-source-IP -v remote-IP 31337    # from source-IP to remote returns source-IP NOT proxy-source-IP as it is supposed to ex: from 1.0.0.0: ncat -g 1.0.1.0 -v 1.1.0.0 31337 is supposed to return 1.0.1.0 NOT 1.0.0.0
-G                     ncat -G 4 -v remote-IP 31337            # what does G4 EXACTLY mean here ?
-s proxy-source-IP            ncat -s proxy-source-IP -v remote-IP 31337    # from source-IP to remote returns source-IP NOT proxy-source-IP as it is supposed to ex: from 1.0.0.0: ncat -s 1.0.1.0 -v 1.1.0.0 31337 is supposed to return 1.0.1.0 NOT 1.0.0.0
--sctp                    ncat -v remote-IP --sctp 31338            # input goes to shell NOT ncat as STDERR replies input (see below)
</code>

--sctp
Ncat: Version 6.00 ( http://nmap.org/ncat )
foo
No command 'foo' found, did you mean:
 Command 'fio' from package 'fio' (main)
 Command 'xoo' from package 'xoo' (main)
 Command 'fop' from package 'fop' (main)
 Command 'fox' from package 'objcryst-fox' (main)
 Command 'zoo' from package 'zoo' (main)
 Command 'goo' from package 'goo' (main)
foo: command not found

anyone has a clue ?