[  504.346998] bond0: (slave eth0): making interface the new active one
[  504.347081] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.499228] bond0: (slave eth0): Releasing backup interface
[  508.583438] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.729302] bond0: (slave eth0): Releasing backup interface
[  512.773242] bond0 (unregistering): Released all slaves