[  512.251950] bond0: (slave eth0): making interface the new active one
[  512.252043] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.440139] bond0: (slave eth0): Releasing backup interface
[  516.546694] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.726934] bond0: (slave eth0): Releasing backup interface
[  520.769985] bond0 (unregistering): Released all slaves