[  520.699412] bond0: (slave eth0): making interface the new active one
[  520.699536] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.888886] bond0: (slave eth0): Releasing backup interface
[  524.971744] bond0: (slave eth0): Enslaving as an active interface with an up link
[  529.105303] bond0: (slave eth0): Releasing backup interface
[  529.133258] bond0 (unregistering): Released all slaves