[  519.580571] bond0: (slave eth0): making interface the new active one
[  519.580639] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.725842] bond0: (slave eth0): Releasing backup interface
[  523.796185] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.954628] bond0: (slave eth0): Releasing backup interface
[  527.990503] bond0 (unregistering): Released all slaves