+/* With IPv6, it looks like Digital has mixed up the proper order of
+ recursive header file inclusion, resulting in the compiler complaining
+ that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
+ is needed to have fileno() declared correctly... So let's define u_int */
+#if defined(__DECC) && !defined(__U_INT)
+#define __U_INT
+typedef unsigned int u_int;
+#endif
+