[  517.731924] bond0: (slave eth0): making interface the new active one
[  517.732015] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.936927] bond0: (slave eth0): Releasing backup interface
[  522.017355] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.160166] bond0: (slave eth0): Releasing backup interface
[  526.198146] bond0 (unregistering): Released all slaves