[  511.168581] bond0: (slave eth0): making interface the new active one
[  511.168654] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.421737] bond0: (slave eth0): Releasing backup interface
[  515.525073] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.704086] bond0: (slave eth0): Releasing backup interface
[  519.731983] bond0 (unregistering): Released all slaves