Index: include/netaddr.h
===================================================================
RCS file: /cvsroot/proftp/proftpd/include/netaddr.h,v
retrieving revision 1.13
diff -u -r1.13 netaddr.h
--- include/netaddr.h	11 Oct 2003 16:57:24 -0000	1.13
+++ include/netaddr.h	17 Oct 2003 14:14:36 -0000
@@ -160,7 +160,8 @@
 int pr_netaddr_loopback(const pr_netaddr_t *);
 
 /* Returns TRUE if the given pr_netaddr_t is of the AF_INET6 family and
- * contains an IPv4-mapped IPv6 address; otherwise FALSE is returned.
+ * contains an IPv4-mapped IPv6 address; otherwise FALSE is returned.  A
+ * return value of -1 is used to indicate an error.
  */
 int pr_netaddr_is_v4mappedv6(const pr_netaddr_t *);
 
Index: modules/mod_core.c
===================================================================
RCS file: /cvsroot/proftp/proftpd/modules/mod_core.c,v
retrieving revision 1.194
diff -u -r1.194 mod_core.c
--- modules/mod_core.c	17 Oct 2003 13:19:54 -0000	1.194
+++ modules/mod_core.c	17 Oct 2003 14:14:37 -0000
      * address if the remote client address is an IPv4-mapped IPv6 address.
      */
     if (pr_netaddr_get_family(remote_addr) == AF_INET6 &&
-        !pr_netaddr_is_v4mappedv6(remote_addr)) {
+        pr_netaddr_is_v4mappedv6(remote_addr) != TRUE) {
       log_pri(PR_LOG_WARNING, "Refused PORT %s (IPv4/IPv6 address mismatch)",
         cmd->arg);
       pr_response_add_err(R_500, "Illegal PORT command");
Index: src/netaddr.c
===================================================================
RCS file: /cvsroot/proftp/proftpd/src/netaddr.c,v
retrieving revision 1.32
diff -u -r1.32 netaddr.c
--- src/netaddr.c	14 Oct 2003 18:22:16 -0000	1.32
+++ src/netaddr.c	17 Oct 2003 14:14:37 -0000
@@ -631,7 +631,7 @@
       void *inaddr = pr_netaddr_get_inaddr(na);
     
 #ifdef HAVE_GETHOSTBYNAME2
-      if (pr_netaddr_is_v4mappedv6(na)) {
+      if (pr_netaddr_is_v4mappedv6(na) == TRUE) {
         family = AF_INET;
         inaddr = get_v4inaddr(na);
       }