[  515.316911] bond0: (slave eth0): making interface the new active one
[  515.317026] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.603380] bond0: (slave eth0): Releasing backup interface
[  519.732163] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.945000] bond0: (slave eth0): Releasing backup interface
[  523.973004] bond0 (unregistering): Released all slaves