[  519.188649] bond0: (slave eth0): making interface the new active one
[  519.188717] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.338801] bond0: (slave eth0): Releasing backup interface
[  523.407076] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.566189] bond0: (slave eth0): Releasing backup interface
[  527.589126] bond0 (unregistering): Released all slaves