[  507.345854] bond0: (slave eth0): making interface the new active one
[  507.345922] bond0: (slave eth0): Enslaving as an active interface with an up link
[  511.563298] bond0: (slave eth0): Releasing backup interface
[  511.647964] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.791953] bond0: (slave eth0): Releasing backup interface
[  515.810458] bond0 (unregistering): Released all slaves