[  517.549072] bond0: (slave eth0): making interface the new active one
[  517.549144] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.763580] bond0: (slave eth0): Releasing backup interface
[  521.885108] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.108662] bond0: (slave eth0): Releasing backup interface
[  526.133575] bond0 (unregistering): Released all slaves