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IPv6 FTP PASV problems

From: <>
Date: Tue, 28 Aug 2007 13:11:24 +0000

Hello. I am having IPv6 related problems with FTP that seem to revolve around the use of PASV. The problem is that I don't know how to turn of PASV as there doesn't seem to be a CURPOPT for it. Here's the error we are getting:

< 230-User guest has group access to: guest
< 230 OK. Current directory is /home/guest
< 257 "/home/guest" is your current location
* Entry path is '/home/guest'
> CWD incoming
< 250 OK. Current directory is /home/guest/incoming
* Connect data stream passively
< 425 All reserved TCP ports are busy
* disabling EPSV usage
< 425 You cannot use PASV on IPv6 connections. Use EPSV instead.
* Bad PASV/EPSV response: 425
* Remembering we are in dir incoming/RSC_CELERRA_11111_22222_33333.end.gzip.en2
* Connection #0 to host fe80::213:72ff:fe8e:6d99%1 left intact
* FTP: unknown PASV reply
< 221-Goodbye. You uploaded 0 and downloaded 0 kbytes.
< 221 Logout.
* Closing connection #0

The CURL call that we're making are as follows:

                        curl_easy_setopt( pCURL, CURLOPT_UPLOAD, TRUE );
                        curl_easy_setopt( pCURL, CURLOPT_VERBOSE, TRUE );
                        curl_easy_setopt( pCURL, CURLOPT_TRANSFERTEXT, FALSE );
                        curl_easy_setopt( pCURL, CURLOPT_USERPWD, chUserIDPassword );
                              curl_easy_setopt(pCURL, CURLOPT_URL, chFTPCmd);
                        curl_easy_setopt(pCURL, CURLOPT_READDATA, fp);

                        // try the transfer
                        CURLcode res = curl_easy_perform( pCURL );

Anyone know how to turn off the PASV?

We've tried the following as well:

                                curl_easy_setopt( pCURL, CURLOPT_FTP_USE_EPSV, TRUE );
                                curl_easy_setopt( pCURL, CURLOPT_FTP_USE_EPSV, FALSE );
                                curl_easy_setopt( pCURL, CURLOPT_FTP_USE_EPRT, TRUE );

We've tried all in various configurations. But it doesn't seem to change anything.

Any help is greatly appreciated

Thanks, Jim
Received on 2007-08-29