[  517.667542] bond0: (slave eth0): making interface the new active one
[  517.667616] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.889648] bond0: (slave eth0): Releasing backup interface
[  521.989460] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.173021] bond0: (slave eth0): Releasing backup interface
[  526.201069] bond0 (unregistering): Released all slaves