[  512.869554] bond0: (slave eth0): making interface the new active one
[  512.869626] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.079597] bond0: (slave eth0): Releasing backup interface
[  517.180555] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.363953] bond0: (slave eth0): Releasing backup interface
[  521.397940] bond0 (unregistering): Released all slaves