[  512.307933] bond0: (slave eth0): making interface the new active one
[  512.308068] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.500537] bond0: (slave eth0): Releasing backup interface
[  516.579281] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.730509] bond0: (slave eth0): Releasing backup interface
[  520.774473] bond0 (unregistering): Released all slaves