[  512.924220] bond0: (slave eth0): making interface the new active one
[  512.924284] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.144704] bond0: (slave eth0): Releasing backup interface
[  517.242240] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.430057] bond0: (slave eth0): Releasing backup interface
[  521.455878] bond0 (unregistering): Released all slaves