is a connection bind to a device?

[yilang Long <yilang2007lw gmail com>]

Hi,everyone. 

When I have two 802-3-ethernet devices, is the connection object(settings.connection) bind to one of the devices?I didn't find any property for NMDevice to get his connections ,also for settings.connection, no property indicates his device in the dbus specification. so then can i switch a wired connection to a different wired device? If permits to do that, how can I do?

 thanks for any reply

yours,

yilang