diff --git a/cf/sunos4.h b/cf/sunos4.h
index cded9601..372d5040 100644
--- a/cf/sunos4.h
+++ b/cf/sunos4.h
@@ -124,6 +124,12 @@ char *strerror PROTO ((int));
    as usual, SysV can't do networking to save its life. */
 #define USE_POLL
 
+/* By default, use NIT API for receiving and sending packets... */
+#if defined (USE_DEFAULT_NETWORK)
+#  define USE_NIT
+#endif
+
+
 #define EOL	'\n'
 #define VOIDPTR	void *
 
diff --git a/includes/cf/sunos4.h b/includes/cf/sunos4.h
index cded9601..372d5040 100644
--- a/includes/cf/sunos4.h
+++ b/includes/cf/sunos4.h
@@ -124,6 +124,12 @@ char *strerror PROTO ((int));
    as usual, SysV can't do networking to save its life. */
 #define USE_POLL
 
+/* By default, use NIT API for receiving and sending packets... */
+#if defined (USE_DEFAULT_NETWORK)
+#  define USE_NIT
+#endif
+
+
 #define EOL	'\n'
 #define VOIDPTR	void *