forgot to add dtor definition

interface.h

@@ -9,6 +9,7 @@ Q_OBJECT
 
 public:
   Interface(QString interface);
+  ~Interface();
   static QStringList list();
   QStringList addresses() const;
   bool hasCarrier(bool *ok = 0);

neighbor.h

@@ -10,6 +10,7 @@ Q_OBJECT
 
 public:
   Neighbor(QString interface = QString());
+  ~Neighbor();
   QString macOfIP(QString ip, bool *ok = 0) const;
   QHash<QString, QString> list(bool *ok = 0);
   static QHash<QString, QString> list(QString interface = QString(), bool *ok = 0);