[  520.095981] bond0: (slave eth0): making interface the new active one
[  520.096080] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.304429] bond0: (slave eth0): Releasing backup interface
[  524.387010] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.531903] bond0: (slave eth0): Releasing backup interface
[  528.562888] bond0 (unregistering): Released all slaves