[  515.497150] bond0: (slave eth0): making interface the new active one
[  515.497213] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.705242] bond0: (slave eth0): Releasing backup interface
[  519.810869] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.997920] bond0: (slave eth0): Releasing backup interface
[  524.025808] bond0 (unregistering): Released all slaves