[  511.233789] bond0: (slave eth0): making interface the new active one
[  511.233858] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.481010] bond0: (slave eth0): Releasing backup interface
[  515.607272] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.830872] bond0: (slave eth0): Releasing backup interface
[  519.859990] bond0 (unregistering): Released all slaves