[  515.189992] bond0: (slave eth0): making interface the new active one
[  515.190058] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.387388] bond0: (slave eth0): Releasing backup interface
[  519.491994] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.667103] bond0: (slave eth0): Releasing backup interface
[  523.699010] bond0 (unregistering): Released all slaves