[  512.582788] bond0: (slave eth0): making interface the new active one
[  512.582908] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.754536] bond0: (slave eth0): Releasing backup interface
[  516.822647] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.980259] bond0: (slave eth0): Releasing backup interface
[  521.005206] bond0 (unregistering): Released all slaves