[  512.879355] bond0: (slave eth0): making interface the new active one
[  512.879442] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.081919] bond0: (slave eth0): Releasing backup interface
[  517.192997] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.370900] bond0: (slave eth0): Releasing backup interface
[  521.396860] bond0 (unregistering): Released all slaves