[  519.538356] bond0: (slave eth0): making interface the new active one
[  519.538493] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.728772] bond0: (slave eth0): Releasing backup interface
[  523.802347] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.955951] bond0: (slave eth0): Releasing backup interface
[  527.988955] bond0 (unregistering): Released all slaves