diff -urN bird-1.0.11/sysdep/linux/sysio.h bird-1.0.11/sysdep/linux/sysio.h
--- sysdep/linux/sysio.h	2000-05-11 12:30:56.000000000 -0400
+++ sysdep/linux/sysio.h	2006-07-13 10:20:54.000000000 -0400
@@ -23,6 +23,7 @@
 
 #else
 
+#include <linux/if.h>
 #include <net/if.h>
 
 static inline void