Raise exception if port and device cannot be determined
Raise exception if port and device cannot be determined

chrisroberts/vagrant,mitchellh/vagrant,chrisroberts/vagrant,marxarelli/vagrant,sni/vagrant,mitchellh/vagrant,sni/vagrant,marxarelli/vagrant,mitchellh/vagrant,mitchellh/vagrant,sni/vagrant,marxarelli/vagrant,marxarelli/vagrant,chrisroberts/vagrant,chrisroberts/vagrant,sni/vagrant