[  512.992098] bond0: (slave eth0): making interface the new active one
[  512.992240] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.209172] bond0: (slave eth0): Releasing backup interface
[  517.293145] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.435465] bond0: (slave eth0): Releasing backup interface
[  521.462440] bond0 (unregistering): Released all slaves