[  515.192146] bond0: (slave eth0): making interface the new active one
[  515.192220] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.448870] bond0: (slave eth0): Releasing backup interface
[  519.550760] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.728697] bond0: (slave eth0): Releasing backup interface
[  523.763675] bond0 (unregistering): Released all slaves