[  519.312026] bond0: (slave eth0): making interface the new active one
[  519.312113] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.542899] bond0: (slave eth0): Releasing backup interface
[  523.639236] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.840421] bond0: (slave eth0): Releasing backup interface
[  527.873041] bond0 (unregistering): Released all slaves