[  515.312382] bond0: (slave eth0): making interface the new active one
[  515.312475] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.509935] bond0: (slave eth0): Releasing backup interface
[  519.610789] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.799991] bond0: (slave eth0): Releasing backup interface
[  523.841961] bond0 (unregistering): Released all slaves