[  517.507700] bond0: (slave eth0): making interface the new active one
[  517.507800] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.751098] bond0: (slave eth0): Releasing backup interface
[  521.869877] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.040934] bond0: (slave eth0): Releasing backup interface
[  526.070902] bond0 (unregistering): Released all slaves