[  515.564569] bond0: (slave eth0): making interface the new active one
[  515.564661] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.766259] bond0: (slave eth0): Releasing backup interface
[  519.835538] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.994053] bond0: (slave eth0): Releasing backup interface
[  524.038388] bond0 (unregistering): Released all slaves