[  519.572920] bond0: (slave eth0): making interface the new active one
[  519.572998] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.722789] bond0: (slave eth0): Releasing backup interface
[  523.793084] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.951087] bond0: (slave eth0): Releasing backup interface
[  527.989029] bond0 (unregistering): Released all slaves