[  518.495618] bond0: (slave eth0): making interface the new active one
[  518.495705] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.710332] bond0: (slave eth0): Releasing backup interface
[  522.826598] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.990857] bond0: (slave eth0): Releasing backup interface
[  527.020844] bond0 (unregistering): Released all slaves