[  519.145793] bond0: (slave eth0): making interface the new active one
[  519.145863] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.345011] bond0: (slave eth0): Releasing backup interface
[  523.426330] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.631680] bond0: (slave eth0): Releasing backup interface
[  527.666608] bond0 (unregistering): Released all slaves