[  515.426375] bond0: (slave eth0): making interface the new active one
[  515.426446] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.641565] bond0: (slave eth0): Releasing backup interface
[  519.738303] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.921009] bond0: (slave eth0): Releasing backup interface
[  523.944911] bond0 (unregistering): Released all slaves