diff --git a/library/GTPv1U_CodecPort_CtrlFunctDef.cc b/library/GTPv1U_CodecPort_CtrlFunctDef.cc
new file mode 100644
index 0000000..49f74ce
--- /dev/null
+++ b/library/GTPv1U_CodecPort_CtrlFunctDef.cc
@@ -0,0 +1,17 @@
+#include "IPL4asp_PortType.hh"
+#include "IPL4asp_PT.hh"
+#include "GTPv1U_CodecPort.hh"
+
+namespace GTPv1U__CodecPort__CtrlFunct {
+
+  IPL4asp__Types::Result f__GTPU__listen(
+    GTPv1U__CodecPort::GTPU__PT& portRef,
+    const IPL4asp__Types::HostName& locName,
+    const IPL4asp__Types::PortNumber& locPort,
+    const IPL4asp__Types::ProtoTuple& proto,
+    const IPL4asp__Types::OptionList& options)
+  {
+    return f__IPL4__PROVIDER__listen(portRef, locName, locPort, proto, options);
+  }
+
+}