[  519.551678] bond0: (slave eth0): making interface the new active one
[  519.551760] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.804968] bond0: (slave eth0): Releasing backup interface
[  523.923636] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.094304] bond0: (slave eth0): Releasing backup interface
[  528.127194] bond0 (unregistering): Released all slaves