[Neighbor]
Address=2004:da8:1:0::1
LinkLayerAddress=00:00:5e:00:02:66
+
+[Neighbor]
+# unmatching link layer address length
+Address=2004:da8:1:0::2
+LinkLayerAddress=192.168.0.1
+
+[Neighbor]
+# invalid setting (without LinkLayerAddress=)
+Address=192.168.10.2
+
+[Neighbor]
+# invalid setting (without Address=)
+LinkLayerAddress=00:00:5e:00:02:67