diff --git a/protos/core_adapter.proto b/protos/core_adapter.proto
index d828194..8b52a56 100644
--- a/protos/core_adapter.proto
+++ b/protos/core_adapter.proto
@@ -73,4 +73,35 @@
 
 message PortCapability {
     LogicalPort port = 1;
+}
+
+message InterAdapterMessageType {
+    enum Types {
+        FLOW_REQUEST = 0;
+        FLOW_RESPONSE = 1;
+        OMCI_REQUEST = 2;
+        OMCI_RESPONSE = 3;
+        METRICS_REQUEST = 4;
+        METRICS_RESPONSE = 5;
+    }
+}
+
+message InterAdapterHeader {
+    string id = 1;
+    InterAdapterMessageType.Types type = 2;
+    string from_topic = 3;
+    string to_topic = 4;
+    string to_device_id = 5;
+    string proxy_device_id = 6;
+    int64 timestamp = 7;
+}
+
+message InterAdapterResponseBody {
+    bool success = 1;
+    google.protobuf.Any result = 2;
+}
+
+message InterAdapterMessage {
+    InterAdapterHeader header = 1;
+    google.protobuf.Any body = 2;
 }
\ No newline at end of file
diff --git a/protos/device.proto b/protos/device.proto
index 9c2d98c..61056e6 100644
--- a/protos/device.proto
+++ b/protos/device.proto
@@ -243,11 +243,12 @@
 
     message ProxyAddress {
         string device_id = 1;  // Which device to use as proxy to this device
-        uint32 channel_id = 2;  // Sub-address within proxy
-        uint32 channel_group_id = 5; // Channel Group index
-        string channel_termination = 6; // Channel Termination name
-        uint32 onu_id = 3; // onu identifier; optional
-        uint32 onu_session_id = 4; // session identifier for the ONU; optional
+        string device_type = 2; // The device type of the proxy device to use as the adapter name
+        uint32 channel_id = 3;  // Sub-address within proxy
+        uint32 channel_group_id = 4; // Channel Group index
+        string channel_termination = 5; // Channel Termination name
+        uint32 onu_id = 6; // onu identifier; optional
+        uint32 onu_session_id = 7; // session identifier for the ONU; optional
     };
 
     // Device contact MAC address (format: "xx:xx:xx:xx:xx:xx")