[  519.059192] bond0: (slave eth0): making interface the new active one
[  519.059298] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.211386] bond0: (slave eth0): Releasing backup interface
[  523.272053] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.432977] bond0: (slave eth0): Releasing backup interface
[  527.467977] bond0 (unregistering): Released all slaves