#define BIT_BUCKET "/dev/nul" /* Will this work? */
+/* Apparently TCPIPV4 defines may be included even with only IAK present */
+
+#if !defined(NO_TCPIPV4) && !defined(TCPIPV4)
+# define TCPIPV4
+# define TCPIPV4_FORCED /* Just in case */
+#endif
+
#if defined(I_SYS_UN) && !defined(TCPIPV4)
/* It is not working without TCPIPV4 defined. */
# undef I_SYS_UN