[  512.965897] bond0: (slave eth0): making interface the new active one
[  512.965975] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.211055] bond0: (slave eth0): Releasing backup interface
[  517.324209] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.494153] bond0: (slave eth0): Releasing backup interface
[  521.516054] bond0 (unregistering): Released all slaves