[  520.563504] bond0: (slave eth0): making interface the new active one
[  520.563629] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.757311] bond0: (slave eth0): Releasing backup interface
[  524.834823] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.983309] bond0: (slave eth0): Releasing backup interface
[  529.004244] bond0 (unregistering): Released all slaves