[  519.004779] bond0: (slave eth0): making interface the new active one
[  519.004857] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.221645] bond0: (slave eth0): Releasing backup interface
[  523.293963] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.468608] bond0: (slave eth0): Releasing backup interface
[  527.500337] bond0 (unregistering): Released all slaves