[  501.570940] bond0: (slave eth0): making interface the new active one
[  501.571079] bond0: (slave eth0): Enslaving as an active interface with an up link
[  505.750452] bond0: (slave eth0): Releasing backup interface
[  505.825110] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.975627] bond0: (slave eth0): Releasing backup interface
[  509.998586] bond0 (unregistering): Released all slaves