[  512.657899] bond0: (slave eth0): making interface the new active one
[  512.657980] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.885772] bond0: (slave eth0): Releasing backup interface
[  516.990631] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.180939] bond0: (slave eth0): Releasing backup interface
[  521.210899] bond0 (unregistering): Released all slaves