[  519.498598] bond0: (slave eth0): making interface the new active one
[  519.498701] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.659310] bond0: (slave eth0): Releasing backup interface
[  523.724105] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.886585] bond0: (slave eth0): Releasing backup interface
[  527.934609] bond0 (unregistering): Released all slaves