[  503.519710] bond0: (slave eth0): making interface the new active one
[  503.519799] bond0: (slave eth0): Enslaving as an active interface with an up link
[  507.733014] bond0: (slave eth0): Releasing backup interface
[  507.819712] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.019109] bond0: (slave eth0): Releasing backup interface
[  512.048681] bond0 (unregistering): Released all slaves