diff --git a/include/s11/gtpv2c_ie.h b/include/s11/gtpv2c_ie.h
new file mode 100644
index 0000000..05f409f
--- /dev/null
+++ b/include/s11/gtpv2c_ie.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2003-2018, Great Software Laboratory Pvt. Ltd.
+ * Copyright (c) 2017 Intel Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+#ifndef __GTPV2C_IE_H_
+#define __GTPV2C_IE_H_
+
+
+#include <inttypes.h>
+#include <stdlib.h>
+#include <netinet/in.h>
+
+#define IPV4_IE_LENGTH          4
+#define IPV6_IE_LENGTH          16
+
+/* TODO: Check size */
+#define GTPV2C_MAX_LEN          4096
+
+#define AMBR_UPLINK             100000000
+#define AMBR_DOWNLINK           50000000
+
+#define MBR_UPLINK              245018193L//245018193976L
+#define MBR_DOWNLINK            245018193L//245018193976L
+
+enum gtpv2c_ie_type {
+	IE_RESERVED = 0,
+	IE_IMSI = 1,
+	IE_APN = 71,
+	IE_AMBR = 72,
+	IE_EBI = 73,
+	IE_INDICATION = 77,
+	IE_MSISDN = 76,
+	IE_PAA = 79,
+	IE_BEARER_QOS = 80,
+	IE_RAT_TYPE = 82,
+	IE_SERVING_NETWORK = 83,
+	IE_ULI = 86,
+	IE_FTEID = 87,
+	IE_BEARER_CONTEXT = 93,
+	IE_PDN_TYPE = 99,
+	IE_APN_RESTRICTION = 127,
+	IE_SELECTION_MODE = 128,
+};
+
+enum cause_value {
+	GTPV2C_CAUSE_REQUEST_ACCEPTED = 16,
+	GTPV2C_CAUSE_REQUEST_ACCEPTED_PARTIALLY = 17,
+	GTPV2C_CAUSE_NEW_PDN_TYPE_NETWORK_PREFERENCE = 18,
+	GTPV2C_CAUSE_NEW_PDN_TYPE_SINGLE_ADDR_BEARER = 19,
+	GTPV2C_CAUSE_CONTEXT_NOT_FOUND = 64,
+	GTPV2C_CAUSE_INVALID_MESSAGE_FORMAT = 65,
+	GTPV2C_CAUSE_INVALID_LENGTH = 67,
+	GTPV2C_CAUSE_SERVICE_NOT_SUPPORTED = 68,
+	GTPV2C_CAUSE_MANDATORY_IE_INCORRECT = 69,
+	GTPV2C_CAUSE_MANDATORY_IE_MISSING = 70,
+	GTPV2C_CAUSE_SYSTEM_FAILURE = 72,
+	GTPV2C_CAUSE_NO_RESOURCES_AVAILABLE = 73,
+	GTPV2C_CAUSE_MISSING_UNKNOWN_APN = 78,
+	GTPV2C_CAUSE_PREFERRED_PDN_TYPE_UNSUPPORTED = 83,
+	GTPV2C_CAUSE_ALL_DYNAMIC_ADDRESSES_OCCUPIED = 84,
+	GTPV2C_CAUSE_REQUEST_REJECTED = 94,
+	GTPV2C_CAUSE_REMOTE_PEER_NOT_RESPONDING = 100,
+	GTPV2C_CAUSE_CONDITIONAL_IE_MISSING = 103,
+};
+
+#define PDN_IP_TYPE_IPV4                                      1
+#define PDN_IP_TYPE_IPV6                                      2
+#define PDN_IP_TYPE_IPV4V6                                    3
+
+
+enum gtpv2c_ie_instance {
+	INSTANCE_ZERO = 0,
+	INSTANCE_ONE = 1,
+	INSTANCE_TWO = 2,
+};
+
+#pragma pack(1)
+
+
+typedef struct gtpv2c_ie_t {
+	uint8_t type;
+	uint16_t length;
+	uint8_t instance;
+	uint8_t value[GTPV2C_MAX_LEN];
+} gtpv2c_ie;
+
+
+typedef struct fteid_ie_t {
+	uint8_t iface_type :6;
+	uint8_t ipv6 :1;
+	uint8_t ipv4 :1;
+	uint32_t teid;
+	union ip_t {
+		uint32_t ipv4;
+		uint8_t ipv6[INET6_ADDRSTRLEN];
+		struct ipv4v6_t_x {
+			uint32_t ipv4;
+			uint8_t ipv6[INET6_ADDRSTRLEN];
+		} ipv4v6;
+	} ipaddr;
+} fteid_ie;
+
+
+#pragma pack()
+
+#endif /* __GTPV2C_IE_H_ */