[  515.505451] bond0: (slave eth0): making interface the new active one
[  515.505566] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.700568] bond0: (slave eth0): Releasing backup interface
[  519.768417] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.924227] bond0: (slave eth0): Releasing backup interface
[  523.957146] bond0 (unregistering): Released all slaves