[  515.142370] bond0: (slave eth0): making interface the new active one
[  515.142471] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.388005] bond0: (slave eth0): Releasing backup interface
[  519.488488] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.677065] bond0: (slave eth0): Releasing backup interface
[  523.704024] bond0 (unregistering): Released all slaves