[  515.727260] bond0: (slave eth0): making interface the new active one
[  515.727329] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.962421] bond0: (slave eth0): Releasing backup interface
[  520.073170] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.251117] bond0: (slave eth0): Releasing backup interface
[  524.280012] bond0 (unregistering): Released all slaves