[  515.446631] bond0: (slave eth0): making interface the new active one
[  515.446728] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.639046] bond0: (slave eth0): Releasing backup interface
[  519.727767] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.928531] bond0: (slave eth0): Releasing backup interface
[  523.952359] bond0 (unregistering): Released all slaves