[  520.223580] bond0: (slave eth0): making interface the new active one
[  520.223653] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.426231] bond0: (slave eth0): Releasing backup interface
[  524.497871] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.655548] bond0: (slave eth0): Releasing backup interface
[  528.685312] bond0 (unregistering): Released all slaves