[  519.407515] bond0: (slave eth0): making interface the new active one
[  519.407617] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.595678] bond0: (slave eth0): Releasing backup interface
[  523.676630] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.823102] bond0: (slave eth0): Releasing backup interface
[  527.850941] bond0 (unregistering): Released all slaves