[  519.538334] bond0: (slave eth0): making interface the new active one
[  519.538401] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.726087] bond0: (slave eth0): Releasing backup interface
[  523.783396] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.951769] bond0: (slave eth0): Releasing backup interface
[  527.978531] bond0 (unregistering): Released all slaves