diff -rup Python-2.5.1-orig/Modules/socketmodule.c Python-2.5.1/Modules/socketmodule.c
--- Python-2.5.1-orig/Modules/socketmodule.c	2008-03-25 09:59:38.000000000 -0400
+++ Python-2.5.1/Modules/socketmodule.c	2008-03-25 10:12:24.000000000 -0400
@@ -4977,6 +4977,15 @@ init_socket(void)
 #ifdef	TCP_QUICKACK
 	PyModule_AddIntConstant(m, "TCP_QUICKACK", TCP_QUICKACK);
 #endif
+#ifdef	TCP_CONGESTION
+	PyModule_AddIntConstant(m, "TCP_CONGESTION", TCP_CONGESTION);
+#endif
+#ifdef	TCP_MD5SIG
+	PyModule_AddIntConstant(m, "TCP_MD5SIG", TCP_MD5SIG);
+#endif
+#ifdef	TCP_MD5SIG_MAXKEYLEN
+	PyModule_AddIntConstant(m, "TCP_MD5SIG_MAXKEYLEN", TCP_MD5SIG_MAXKEYLEN);
+#endif
 
 
 	/* IPX options */
Only in Python-2.5.1/Modules: socketmodule.c~