[  519.387463] bond0: (slave eth0): making interface the new active one
[  519.387545] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.529166] bond0: (slave eth0): Releasing backup interface
[  523.598628] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.761594] bond0: (slave eth0): Releasing backup interface
[  527.797111] bond0 (unregistering): Released all slaves