[  520.049252] bond0: (slave eth0): making interface the new active one
[  520.049350] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.240774] bond0: (slave eth0): Releasing backup interface
[  524.308566] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.464756] bond0: (slave eth0): Releasing backup interface
[  528.494812] bond0 (unregistering): Released all slaves