[  513.214328] bond0: (slave eth0): making interface the new active one
[  513.214431] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.472681] bond0: (slave eth0): Releasing backup interface
[  517.579181] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.753482] bond0: (slave eth0): Releasing backup interface
[  521.793345] bond0 (unregistering): Released all slaves