[  515.351845] bond0: (slave eth0): making interface the new active one
[  515.351923] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.575673] bond0: (slave eth0): Releasing backup interface
[  519.680999] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.872109] bond0: (slave eth0): Releasing backup interface
[  523.895991] bond0 (unregistering): Released all slaves