[  512.791657] bond0: (slave eth0): making interface the new active one
[  512.791719] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.017542] bond0: (slave eth0): Releasing backup interface
[  517.130806] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.300126] bond0: (slave eth0): Releasing backup interface
[  521.324076] bond0 (unregistering): Released all slaves