diff --git a/types.hpp b/types.hpp
new file mode 100644
index 0000000..28b34d9
--- /dev/null
+++ b/types.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <list>
+#include <string>
+#include <vector>
+#include <map>
+
+namespace phosphor
+{
+namespace network
+{
+
+using IntfName = std::string;
+
+struct AddrInfo {
+    uint8_t addrType;
+    std::string ipaddress;
+    uint16_t prefix;
+};
+
+using AddrList = std::list<AddrInfo>;
+using IntfAddrMap = std::map<IntfName, AddrList>;
+
+
+}//namespace network
+}//namespace phosphor