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diff --git a/src/plugins/dns/dns.api b/src/plugins/dns/dns.api
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+/*
+ * Copyright (c) 2017 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.
+ */
+
+option version = "1.0.0";
+
+/** \brief enable/disable name resolution
+
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_enable - 1 = enable, 0 = disable
+*/
+autoreply manual_print define dns_enable_disable {
+    u32 client_index;
+    u32 context;
+    u8 enable;
+};
+
+/** \brief add or delete an upstream name server
+
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_ip6 - an ip6 name server
+    @param is_add - add = 1, delete = 0
+    @param server_address - server ip address
+*/
+autoreply manual_print define dns_name_server_add_del {
+    u32 client_index;
+    u32 context;
+    u8 is_ip6;
+    u8 is_add;
+    u8 server_address[16];
+};
+
+/** \brief DNS name resolution request
+
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param name - the name to resolve
+*/
+manual_print define dns_resolve_name {
+    u32 client_index;
+    u32 context;
+    u8 name[256];
+ };
+
+/** \brief DNS name resolution reply
+
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param retval - return value, 0 => success
+    @param ip4_set - indicates that the ip4 address is valid
+    @param ip6_set - indicates that the ip6 address is valid
+    @param ip4_address - the ip4 name resolution reply
+    @param ip6_address - the ip6 name resolution reply
+*/
+define dns_resolve_name_reply {
+    u32 context;
+    i32 retval;
+    u8 ip4_set;
+    u8 ip6_set;
+    u8 ip4_address[4];
+    u8 ip6_address[16];
+};
+
+/** \brief DNS IP -> name resolution request
+
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_ip6 - set if the reverse-DNS request is an ip6 address
+    @param address - the address to map to a name
+*/
+manual_print define dns_resolve_ip {
+    u32 client_index;
+    u32 context;
+    u8 is_ip6;
+    u8 address[16];
+ };
+
+/** \brief DNS ip->name resolution reply
+
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param retval - return value, 0 => success
+    @param name - canonical name for the indicated IP address
+*/
+define dns_resolve_ip_reply {
+    u32 context;
+    i32 retval;
+    u8 name[256];
+};