[  515.063588] bond0: (slave eth0): making interface the new active one
[  515.063654] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.262693] bond0: (slave eth0): Releasing backup interface
[  519.375636] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.546155] bond0: (slave eth0): Releasing backup interface
[  523.576090] bond0 (unregistering): Released all slaves