[  512.310032] bond0: (slave eth0): making interface the new active one
[  512.310100] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.506847] bond0: (slave eth0): Releasing backup interface
[  516.606391] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.790974] bond0: (slave eth0): Releasing backup interface
[  520.815923] bond0 (unregistering): Released all slaves