[  512.038071] bond0: (slave eth0): making interface the new active one
[  512.038151] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.247349] bond0: (slave eth0): Releasing backup interface
[  516.363674] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.536225] bond0: (slave eth0): Releasing backup interface
[  520.568108] bond0 (unregistering): Released all slaves