[  519.704405] bond0: (slave eth0): making interface the new active one
[  519.704525] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.852599] bond0: (slave eth0): Releasing backup interface
[  523.919080] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.077743] bond0: (slave eth0): Releasing backup interface
[  528.109850] bond0 (unregistering): Released all slaves