[  515.051668] bond0: (slave eth0): making interface the new active one
[  515.051765] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.258137] bond0: (slave eth0): Releasing backup interface
[  519.369020] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.545922] bond0: (slave eth0): Releasing backup interface
[  523.576904] bond0 (unregistering): Released all slaves