[  515.216500] bond0: (slave eth0): making interface the new active one
[  515.216601] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.392929] bond0: (slave eth0): Releasing backup interface
[  519.468754] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.614480] bond0: (slave eth0): Releasing backup interface
[  523.640484] bond0 (unregistering): Released all slaves