[  515.138096] bond0: (slave eth0): making interface the new active one
[  515.138172] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.381588] bond0: (slave eth0): Releasing backup interface
[  519.478695] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.667819] bond0: (slave eth0): Releasing backup interface
[  523.708744] bond0 (unregistering): Released all slaves