[  512.838557] bond0: (slave eth0): making interface the new active one
[  512.838661] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.013595] bond0: (slave eth0): Releasing backup interface
[  517.093694] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.242545] bond0: (slave eth0): Releasing backup interface
[  521.273385] bond0 (unregistering): Released all slaves