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.\" generated by cd2nroff 0.1 from CURLOPT_FTP_SKIP_PASV_IP.md
.TH CURLOPT_FTP_SKIP_PASV_IP 3 "2025-06-27" libcurl
.SH NAME
CURLOPT_FTP_SKIP_PASV_IP \- ignore the IP address in the PASV response
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FTP_SKIP_PASV_IP, long skip);
.fi
.SH DESCRIPTION
Pass a long. If \fIskip\fP is set to 1, it instructs libcurl to not use the IP
address the server suggests in its 227\-response to libcurl\(aqs PASV command when
libcurl connects the data connection. Instead libcurl reuses the same IP
address it already uses for the control connection. It still uses the port
number from the 227\-response.
This option allows libcurl to work around broken server installations or funny
network setups that due to NATs, firewalls or incompetence report the wrong IP
address. Setting this option also reduces the risk for various sorts of client
abuse by malicious servers.
This option has no effect if PORT, EPRT or EPSV is used instead of PASV.
.SH DEFAULT
1 since 7.74.0, was 0 before then.
.SH PROTOCOLS
This functionality affects ftp only
.SH EXAMPLE
.nf
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode res;
curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/file.txt");
/* please ignore the IP in the PASV response */
curl_easy_setopt(curl, CURLOPT_FTP_SKIP_PASV_IP, 1L);
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
}
.fi
.SH AVAILABILITY
Added in curl 7.15.0
.SH RETURN VALUE
\fIcurl_easy_setopt(3)\fP returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non\-zero means an error occurred, see
\fIlibcurl\-errors(3)\fP.
.SH SEE ALSO
.BR CURLOPT_FTPPORT (3),
.BR CURLOPT_FTP_USE_EPRT (3)