[  512.867725] bond0: (slave eth0): making interface the new active one
[  512.867817] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.071957] bond0: (slave eth0): Releasing backup interface
[  517.146650] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.299339] bond0: (slave eth0): Releasing backup interface
[  521.333157] bond0 (unregistering): Released all slaves