[  515.048135] bond0: (slave eth0): making interface the new active one
[  515.048210] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.257433] bond0: (slave eth0): Releasing backup interface
[  519.360398] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.544821] bond0: (slave eth0): Releasing backup interface
[  523.571784] bond0 (unregistering): Released all slaves