[  519.200912] bond0: (slave eth0): making interface the new active one
[  519.200988] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.404499] bond0: (slave eth0): Releasing backup interface
[  523.478708] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.630001] bond0: (slave eth0): Releasing backup interface
[  527.656714] bond0 (unregistering): Released all slaves