[  515.316615] bond0: (slave eth0): making interface the new active one
[  515.316718] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.503664] bond0: (slave eth0): Releasing backup interface
[  519.574580] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.734868] bond0: (slave eth0): Releasing backup interface
[  523.764415] bond0 (unregistering): Released all slaves