[  499.770561] bond0: (slave eth0): making interface the new active one
[  499.770634] bond0: (slave eth0): Enslaving as an active interface with an up link
[  503.952793] bond0: (slave eth0): Releasing backup interface
[  504.032793] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.193760] bond0: (slave eth0): Releasing backup interface
[  508.219990] bond0 (unregistering): Released all slaves