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diff --git a/hicn-plugin/src/faces/iface_node.h b/hicn-plugin/src/faces/iface_node.h
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+/*
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * 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 __HICN_IFACE_NODE_H__
+#define __HICN_IFACE_NODE_H__
+
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+
+/**
+ * @file iface_node.h
+ *
+ * Implements the input and output iface nodes. Input iface nodes
+ * process incoming interests while output face nodes process outgoing
+ * data packets.
+ *
+ * Input iface nodes follow ip-lookup nodes and their purpose
+ * is to create (or retrieve if already existing) the list incoming face
+ * for each the interest packet.
+ * The following node to the input iface nodes is the hicn-interest-pcslookup.
+ * Output iface nodes follow the hicn-data-fwd and the hicn-interest-hitcs nodes and
+ * they perform the dst nat on each data packet. The node following the
+ * output face nodes depends on the adjacency type. In case of ip, the following
+ * node is the ip4/6-lookup, in case of tunnels the next node is the one implementing
+ * the tunnel encapsulation (udp-encap, mpls, etc).
+ */
+
+
+/**
+ * @brief Initialize the ip iface module
+ */
+void hicn_iface_init (vlib_main_t * vm);
+
+#endif // __HICN_IFACE_IP_NODE_H__
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */