diff --git a/src/ethernet_interface.cpp b/src/ethernet_interface.cpp
index e7a2c29..3374c6f 100644
--- a/src/ethernet_interface.cpp
+++ b/src/ethernet_interface.cpp
@@ -71,6 +71,12 @@
     return ret;
 }
 
+template <typename Addr>
+static bool validIntfIP(Addr a) noexcept
+{
+    return a.isUnicast() && !a.isLoopback();
+}
+
 EthernetInterface::EthernetInterface(stdplus::PinnedRef<sdbusplus::bus_t> bus,
                                      stdplus::PinnedRef<Manager> manager,
                                      const AllIntfInfo& info,
@@ -826,6 +832,10 @@
             gw.clear();
             return;
         }
+        if (!validIntfIP(ip))
+        {
+            throw std::invalid_argument("Invalid unicast");
+        }
         gw = stdplus::toStr(ip);
     }
     catch (const std::exception& e)