[  511.430648] bond0: (slave eth0): making interface the new active one
[  511.430761] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.601429] bond0: (slave eth0): Releasing backup interface
[  515.667895] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.830604] bond0: (slave eth0): Releasing backup interface
[  519.862344] bond0 (unregistering): Released all slaves