[  515.612603] bond0: (slave eth0): making interface the new active one
[  515.612692] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.866639] bond0: (slave eth0): Releasing backup interface
[  520.041404] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.327918] bond0: (slave eth0): Releasing backup interface
[  524.359785] bond0 (unregistering): Released all slaves