[  515.238421] bond0: (slave eth0): making interface the new active one
[  515.238503] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.448773] bond0: (slave eth0): Releasing backup interface
[  519.551367] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.740510] bond0: (slave eth0): Releasing backup interface
[  523.771977] bond0 (unregistering): Released all slaves