Index: uspace/lib/c/include/net/socket_codes.h
===================================================================
--- uspace/lib/c/include/net/socket_codes.h	(revision fdfa2e1855154495fa890446681a484e8d7e8122)
+++ uspace/lib/c/include/net/socket_codes.h	(revision 0005b637cee52ae0c5acff28b4301ad8b67c480e)
@@ -75,4 +75,13 @@
 typedef int32_t socklen_t;
 
+/* Socket options */
+
+enum {
+	SOL_SOCKET = 1,
+
+	/* IP link to transmit on */
+	SO_IPLINK
+};
+
 #endif