[  503.649429] bond0: (slave eth0): making interface the new active one
[  503.649501] bond0: (slave eth0): Enslaving as an active interface with an up link
[  507.847741] bond0: (slave eth0): Releasing backup interface
[  507.911344] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.073446] bond0: (slave eth0): Releasing backup interface
[  512.105354] bond0 (unregistering): Released all slaves