[  511.397140] bond0: (slave eth0): making interface the new active one
[  511.397204] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.607052] bond0: (slave eth0): Releasing backup interface
[  515.714165] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.893989] bond0: (slave eth0): Releasing backup interface
[  519.922988] bond0 (unregistering): Released all slaves