[  515.486061] bond0: (slave eth0): making interface the new active one
[  515.486147] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.637696] bond0: (slave eth0): Releasing backup interface
[  519.709894] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.865410] bond0: (slave eth0): Releasing backup interface
[  523.890455] bond0 (unregistering): Released all slaves