[  512.935181] bond0: (slave eth0): making interface the new active one
[  512.935255] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.147570] bond0: (slave eth0): Releasing backup interface
[  517.262909] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.438005] bond0: (slave eth0): Releasing backup interface
[  521.461918] bond0 (unregistering): Released all slaves