[  512.809669] bond0: (slave eth0): making interface the new active one
[  512.809761] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.024038] bond0: (slave eth0): Releasing backup interface
[  517.126814] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.310932] bond0: (slave eth0): Releasing backup interface
[  521.346921] bond0 (unregistering): Released all slaves