diff -r c821e3a54930 Lib/plat-linux2/in.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Lib/plat-linux2/in.h	Mon Aug 22 13:12:27 2011 +1000
@@ -0,0 +1,3 @@
+#include <netinet/in.h>
+#include <linux/in.h>
+
diff -r c821e3a54930 Lib/plat-linux2/regen
--- a/Lib/plat-linux2/regen	Mon Aug 15 14:28:46 2011 +0300
+++ b/Lib/plat-linux2/regen	Mon Aug 22 13:12:27 2011 +1000
@@ -5,4 +5,4 @@
 	exit 1;;
 esac
 set -v
-h2py -i '(u_long)' /usr/include/sys/types.h /usr/include/netinet/in.h /usr/include/dlfcn.h
+h2py -i '(u_long)' /usr/include/sys/types.h /usr/include/dlfcn.h in.h
diff -r c821e3a54930 Modules/socketmodule.c
--- a/Modules/socketmodule.c	Mon Aug 15 14:28:46 2011 +0300
+++ b/Modules/socketmodule.c	Mon Aug 22 13:12:27 2011 +1000
@@ -5194,6 +5194,11 @@
 #ifdef  IP_RETOPTS
     PyModule_AddIntConstant(m, "IP_RETOPTS", IP_RETOPTS);
 #endif
+#ifdef IP_TRANSPARENT
+    PyModule_AddIntConstant(m, "IP_TRANSPARENT", IP_TRANSPARENT);
+#elif defined(linux)
+    PyModule_AddIntConstant(m, "IP_TRANSPARENT", 19); // from linux/in.h
+#endif
 #ifdef  IP_MULTICAST_IF
     PyModule_AddIntConstant(m, "IP_MULTICAST_IF", IP_MULTICAST_IF);
 #endif