[  516.408815] bond0: (slave eth0): making interface the new active one
[  516.408920] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.604657] bond0: (slave eth0): Releasing backup interface
[  520.713489] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.894694] bond0: (slave eth0): Releasing backup interface
[  524.916266] bond0 (unregistering): Released all slaves