[  511.269330] bond0: (slave eth0): making interface the new active one
[  511.269410] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.480469] bond0: (slave eth0): Releasing backup interface
[  515.579231] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.765175] bond0: (slave eth0): Releasing backup interface
[  519.784019] bond0 (unregistering): Released all slaves