diff --git a/src/ethernet_interface.hpp b/src/ethernet_interface.hpp
index f14e069..fcb45f6 100644
--- a/src/ethernet_interface.hpp
+++ b/src/ethernet_interface.hpp
@@ -101,6 +101,7 @@
     std::unordered_map<InAddrAny, std::unique_ptr<Neighbor>> staticNeighbors;
 
     void addAddr(const AddressInfo& info);
+    void addStaticNeigh(const NeighborInfo& info);
 
     /** @brief Updates the interface information based on new InterfaceInfo */
     void updateInfo(const system::InterfaceInfo& info);