[  515.555077] bond0: (slave eth0): making interface the new active one
[  515.555184] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.766104] bond0: (slave eth0): Releasing backup interface
[  519.844929] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.988263] bond0: (slave eth0): Releasing backup interface
[  524.015172] bond0 (unregistering): Released all slaves