[  515.297762] bond0: (slave eth0): making interface the new active one
[  515.297841] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.509912] bond0: (slave eth0): Releasing backup interface
[  519.621471] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.806542] bond0: (slave eth0): Releasing backup interface
[  523.832964] bond0 (unregistering): Released all slaves