[  503.498088] bond0: (slave eth0): making interface the new active one
[  503.498174] bond0: (slave eth0): Enslaving as an active interface with an up link
[  507.666953] bond0: (slave eth0): Releasing backup interface
[  507.738362] bond0: (slave eth0): Enslaving as an active interface with an up link
[  511.897226] bond0: (slave eth0): Releasing backup interface
[  511.938231] bond0 (unregistering): Released all slaves