[  516.509080] bond0: (slave eth0): making interface the new active one
[  516.509245] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.880748] bond0: (slave eth0): Releasing backup interface
[  521.017987] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.213208] bond0: (slave eth0): Releasing backup interface
[  525.253062] bond0 (unregistering): Released all slaves