[  519.418348] bond0: (slave eth0): making interface the new active one
[  519.418423] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.616769] bond0: (slave eth0): Releasing backup interface
[  523.728815] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.907064] bond0: (slave eth0): Releasing backup interface
[  527.942907] bond0 (unregistering): Released all slaves