[  503.406510] bond0: (slave eth0): making interface the new active one
[  503.406583] bond0: (slave eth0): Enslaving as an active interface with an up link
[  507.604405] bond0: (slave eth0): Releasing backup interface
[  507.663486] bond0: (slave eth0): Enslaving as an active interface with an up link
[  511.831631] bond0: (slave eth0): Releasing backup interface
[  511.865340] bond0 (unregistering): Released all slaves