diff --git a/discovery/Zone.go b/discovery/Zone.go
index 6be8545..190d89e 100644
--- a/discovery/Zone.go
+++ b/discovery/Zone.go
@@ -21,11 +21,12 @@ type Zone struct {
 	mtx sync.RWMutex `json:"-"`
 }
 
-func NewZone(metaIPType *meta.MetaIPType, network string, iface string, address string) *Zone {
+func NewZone(iface string, mac string, metaIPType *meta.MetaIPType, network string, address string) *Zone {
 	return &Zone{
+		Iface:      iface,
+		Mac:        mac,
 		MetaIPType: metaIPType,
 		Network:    network,
-		Iface:      iface,
 		Address:    address,
 	}
 }