[  512.987455] bond0: (slave eth0): making interface the new active one
[  512.987548] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.208828] bond0: (slave eth0): Releasing backup interface
[  517.305747] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.493167] bond0: (slave eth0): Releasing backup interface
[  521.519072] bond0 (unregistering): Released all slaves