[  519.265991] bond0: (slave eth0): making interface the new active one
[  519.266057] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.408817] bond0: (slave eth0): Releasing backup interface
[  523.485354] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.644610] bond0: (slave eth0): Releasing backup interface
[  527.674510] bond0 (unregistering): Released all slaves