diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5911606..d50b1c9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -39,6 +39,11 @@ if (USED_OPENDHCPD)
     ADD_SUBDIRECTORY(srcs/open_dhcp)
 endif ()
 
+if (USED_OPENDHCPDDNS)
+    MESSAGE("Select Option USED_OPENDHCPDDNS")
+    ADD_SUBDIRECTORY(srcs/dual_server)
+endif ()
+
 if (USED_LWIP OR VCPE_AGENT)
     ADD_SUBDIRECTORY(srcs/lwip)
 endif ()
diff --git a/srcs/CMakeLists.txt b/srcs/CMakeLists.txt
index 8b80869..1289713 100644
--- a/srcs/CMakeLists.txt
+++ b/srcs/CMakeLists.txt
@@ -40,6 +40,10 @@ if (USED_OPENDHCPD)
     ADD_DEFINITIONS(-DOPENDHCPD_ON)
 endif ()
 
+if (USED_OPENDHCPDDNS)
+    ADD_DEFINITIONS(-DOPENDHCPDDNS_ON)
+endif ()
+
 ADD_EXECUTABLE(${PROJECT_TARGET} ${VCPE_SRC} ${VCPE_HEADS} vcpe_main.c)
 
 if (VCPE_AGENT)
@@ -50,7 +54,9 @@ if (USED_LWIP)
     TARGET_LINK_LIBRARIES(${PROJECT_TARGET} lwip_linux)
 endif ()
 
-if (USED_OPENDHCPD)
+if (USED_OPENDHCPDDNS)
+    TARGET_LINK_LIBRARIES(${PROJECT_TARGET} dualserverd)
+else ()
     TARGET_LINK_LIBRARIES(${PROJECT_TARGET} opendhcpd)
 endif ()
 
diff --git a/srcs/vcpe_main.c b/srcs/vcpe_main.c
index f412c92..8e86845 100644
--- a/srcs/vcpe_main.c
+++ b/srcs/vcpe_main.c
@@ -10,7 +10,14 @@
 #include "user_info.h"
 #include "lwip/tcpip.h"
 #endif
+
+#ifdef OPENDHCPD_ON
 #include "open_dhcp/dhcpd.h"
+#endif
+
+#ifdef OPENDHCPDDNS_ON
+#include "dual_server/dualsvr.h"
+#endif
 
 #if LWIP_ON
 static void test_init(void *arg) { /* remove compiler warning */
@@ -20,7 +27,6 @@ static void test_init(void *arg) { /* remove compiler warning */
 
     srand((unsigned int)time(0));
 
-
     sys_sem_signal(init_sem);
 }
 
@@ -28,7 +34,7 @@ static void lwip_init_env() {
     err_t     err;
     sys_sem_t init_sem;
 
-    err      = sys_sem_new(&init_sem, 0);
+    err = sys_sem_new(&init_sem, 0);
     LWIP_UNUSED_ARG(err);
     tcpip_init(test_init, &init_sem);
     sys_sem_wait(&init_sem);
@@ -37,7 +43,10 @@ static void lwip_init_env() {
 #endif
 
 int main(int argc, char **argv) {
-#if OPENDHCPD_ON
+
+#ifdef OPENDHCPDDNS_ON
+    return dual_server_main(argc, argv);
+#elif OPENDHCPDDNS
     return dhcpd_main(argc, argv);
 #else
     uv_setup_args(argc, argv);