[  511.777637] bond0: (slave eth0): making interface the new active one
[  511.777734] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.992191] bond0: (slave eth0): Releasing backup interface
[  516.075750] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.210563] bond0: (slave eth0): Releasing backup interface
[  520.233457] bond0 (unregistering): Released all slaves