[  519.570693] bond0: (slave eth0): making interface the new active one
[  519.570783] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.804395] bond0: (slave eth0): Releasing backup interface
[  523.925017] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.085150] bond0: (slave eth0): Releasing backup interface
[  528.108116] bond0 (unregistering): Released all slaves