[  511.566400] bond0: (slave eth0): making interface the new active one
[  511.566488] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.734074] bond0: (slave eth0): Releasing backup interface
[  515.812723] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.964320] bond0: (slave eth0): Releasing backup interface
[  519.998379] bond0 (unregistering): Released all slaves