[  515.395644] bond0: (slave eth0): making interface the new active one
[  515.395728] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.641647] bond0: (slave eth0): Releasing backup interface
[  519.757552] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.931088] bond0: (slave eth0): Releasing backup interface
[  523.956953] bond0 (unregistering): Released all slaves