[  512.864906] bond0: (slave eth0): making interface the new active one
[  512.864997] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.004269] bond0: (slave eth0): Releasing backup interface
[  517.073464] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.232062] bond0: (slave eth0): Releasing backup interface
[  521.268042] bond0 (unregistering): Released all slaves