[  515.313256] bond0: (slave eth0): making interface the new active one
[  515.313345] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.516240] bond0: (slave eth0): Releasing backup interface
[  519.627062] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.796022] bond0: (slave eth0): Releasing backup interface
[  523.835005] bond0 (unregistering): Released all slaves