[  517.401242] bond0: (slave eth0): making interface the new active one
[  517.401362] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.546281] bond0: (slave eth0): Releasing backup interface
[  521.609634] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.771636] bond0: (slave eth0): Releasing backup interface
[  525.797532] bond0 (unregistering): Released all slaves