[  503.573752] bond0: (slave eth0): making interface the new active one
[  503.573848] bond0: (slave eth0): Enslaving as an active interface with an up link
[  507.732492] bond0: (slave eth0): Releasing backup interface
[  507.822413] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.024931] bond0: (slave eth0): Releasing backup interface
[  512.057430] bond0 (unregistering): Released all slaves