[  512.911447] bond0: (slave eth0): making interface the new active one
[  512.911578] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.074838] bond0: (slave eth0): Releasing backup interface
[  517.156052] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.301361] bond0: (slave eth0): Releasing backup interface
[  521.324321] bond0 (unregistering): Released all slaves