[  512.052688] bond0: (slave eth0): making interface the new active one
[  512.052813] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.314991] bond0: (slave eth0): Releasing backup interface
[  516.418495] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.598112] bond0: (slave eth0): Releasing backup interface
[  520.631105] bond0 (unregistering): Released all slaves