[  517.443814] bond0: (slave eth0): making interface the new active one
[  517.443906] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.620910] bond0: (slave eth0): Releasing backup interface
[  521.733251] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.907867] bond0: (slave eth0): Releasing backup interface
[  525.943899] bond0 (unregistering): Released all slaves