$OpenBSD$
--- examples/osgcluster/broadcaster.cpp.orig	Thu Aug  6 09:59:47 2009
+++ examples/osgcluster/broadcaster.cpp	Thu Aug  6 10:00:29 2009
@@ -37,7 +37,7 @@
 #if defined(__linux)
     #include <unistd.h>
     #include <linux/sockios.h>
-#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__OpenBSD__)
     #include <unistd.h>
     #include <sys/sockio.h>
 #elif defined(__sgi)