[  512.862068] bond0: (slave eth0): making interface the new active one
[  512.862169] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.083853] bond0: (slave eth0): Releasing backup interface
[  517.192222] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.370082] bond0: (slave eth0): Releasing backup interface
[  521.393964] bond0 (unregistering): Released all slaves