[  519.039296] bond0: (slave eth0): making interface the new active one
[  519.039384] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.216101] bond0: (slave eth0): Releasing backup interface
[  523.297721] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.446189] bond0: (slave eth0): Releasing backup interface
[  527.473715] bond0 (unregistering): Released all slaves