Index: curl-7.65.3/docs/cmdline-opts/ftp-skip-pasv-ip.d
===================================================================
--- curl-7.65.3.orig/docs/cmdline-opts/ftp-skip-pasv-ip.d	2019-03-25 16:42:46.000000000 +0800
+++ curl-7.65.3/docs/cmdline-opts/ftp-skip-pasv-ip.d	2021-01-07 17:59:27.830166640 +0800
@@ -9,4 +9,6 @@
 will re-use the same IP address it already uses for the control
 connection.
 
+Since curl 7.74.0 this option is enabled by default.
+
 This option has no effect if PORT, EPRT or EPSV is used instead of PASV.
Index: curl-7.65.3/docs/libcurl/opts/CURLOPT_FTP_SKIP_PASV_IP.3
===================================================================
--- curl-7.65.3.orig/docs/libcurl/opts/CURLOPT_FTP_SKIP_PASV_IP.3	2019-07-19 17:37:58.000000000 +0800
+++ curl-7.65.3/docs/libcurl/opts/CURLOPT_FTP_SKIP_PASV_IP.3	2021-01-07 18:01:01.746166640 +0800
@@ -5,7 +5,7 @@
 .\" *                            | (__| |_| |  _ <| |___
 .\" *                             \___|\___/|_| \_\_____|
 .\" *
-.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
 .\" *
 .\" * This software is licensed as described in the file COPYING, which
 .\" * you should have received as part of this distribution. The terms
@@ -36,11 +36,13 @@
 number from the 227-response.
 
 This option thus allows libcurl to work around broken server installations
-that due to NATs, firewalls or incompetence report the wrong IP address back.
+that due to NATs, firewalls or incompetence report the wrong IP address
+back. Setting the 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
-0
+1 since 7.74.0, was 0 before then.
 .SH PROTOCOLS
 FTP
 .SH EXAMPLE
Index: curl-7.65.3/lib/url.c
===================================================================
--- curl-7.65.3.orig/lib/url.c	2021-01-07 17:46:49.701046576 +0800
+++ curl-7.65.3/lib/url.c	2021-01-07 18:01:34.270166640 +0800
@@ -447,6 +447,7 @@
   set->ftp_use_eprt = TRUE;   /* FTP defaults to EPRT operations */
   set->ftp_use_pret = FALSE;  /* mainly useful for drftpd servers */
   set->ftp_filemethod = FTPFILE_MULTICWD;
+  set->ftp_skip_ip = TRUE;    /* skip PASV IP by default */
 #endif
   set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
 
Index: curl-7.65.3/src/tool_cfgable.c
===================================================================
--- curl-7.65.3.orig/src/tool_cfgable.c	2019-06-13 16:52:34.000000000 +0800
+++ curl-7.65.3/src/tool_cfgable.c	2021-01-07 18:01:59.810166640 +0800
@@ -44,6 +44,7 @@
   config->tcp_nodelay = TRUE; /* enabled by default */
   config->happy_eyeballs_timeout_ms = CURL_HET_DEFAULT;
   config->http09_allowed = TRUE;
+  config->ftp_skip_ip = TRUE;
 }
 
 static void free_config_fields(struct OperationConfig *config)