[  513.507404] bond0: (slave eth0): making interface the new active one
[  513.507489] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.727088] bond0: (slave eth0): Releasing backup interface
[  517.836655] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.013495] bond0: (slave eth0): Releasing backup interface
[  522.048520] bond0 (unregistering): Released all slaves