diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index b686548..dfcf449 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -211,6 +211,7 @@
 	NET_SCTP=17,
 	NET_LLC=18,
 	NET_NETFILTER=19,
+	NET_DCCP=20,
 };
 
 /* /proc/sys/kernel/random */
@@ -571,6 +572,21 @@
 	__NET_NEIGH_MAX
 };
 
+/* /proc/sys/net/dccp */
+enum {
+	NET_DCCP_DEFAULT=1,
+};
+
+/* /proc/sys/net/dccp/default */
+enum {
+	NET_DCCP_DEFAULT_SEQ_WINDOW  = 1,
+	NET_DCCP_DEFAULT_RX_CCID     = 2,
+	NET_DCCP_DEFAULT_TX_CCID     = 3,
+	NET_DCCP_DEFAULT_ACK_RATIO   = 4,
+	NET_DCCP_DEFAULT_SEND_ACKVEC = 5,
+	NET_DCCP_DEFAULT_SEND_NDP    = 6,
+};
+
 /* /proc/sys/net/ipx */
 enum {
 	NET_IPX_PPROP_BROADCASTING=1,