[  504.606806] bond0: (slave eth0): making interface the new active one
[  504.606898] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.811152] bond0: (slave eth0): Releasing backup interface
[  508.880046] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.040049] bond0: (slave eth0): Releasing backup interface
[  513.077448] bond0 (unregistering): Released all slaves