[  520.237096] bond0: (slave eth0): making interface the new active one
[  520.237194] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.429928] bond0: (slave eth0): Releasing backup interface
[  524.504606] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.663261] bond0: (slave eth0): Releasing backup interface
[  528.698786] bond0 (unregistering): Released all slaves