[  512.642457] bond0: (slave eth0): making interface the new active one
[  512.642651] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.026947] bond0: (slave eth0): Releasing backup interface
[  517.145721] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.365025] bond0: (slave eth0): Releasing backup interface
[  521.398955] bond0 (unregistering): Released all slaves