diff -ru socat-1.6.0.1/sysincludes.h socat-1.6.0.1+iPhone/sysincludes.h
--- socat-1.6.0.1/sysincludes.h	2008-02-09 21:59:11.000000000 +0000
+++ socat-1.6.0.1+iPhone/sysincludes.h	2008-08-23 19:29:01.000000000 +0000
@@ -104,6 +104,7 @@
 #include <netinet6/in6.h>
 #  endif
 #include <arpa/inet.h>	/* Linux: inet_aton() */
+#define BIND_8_COMPAT
 #if HAVE_ARPA_NAMESER_H
 #include <arpa/nameser.h>	/* req for resolv.h (esp. on MacOSX) */
 #endif