[  512.475801] bond0: (slave eth0): making interface the new active one
[  512.475900] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.698605] bond0: (slave eth0): Releasing backup interface
[  516.826088] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.047099] bond0: (slave eth0): Releasing backup interface
[  521.077057] bond0 (unregistering): Released all slaves