[  514.796592] bond0: (slave eth0): making interface the new active one
[  514.796680] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.997655] bond0: (slave eth0): Releasing backup interface
[  519.100080] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.283783] bond0: (slave eth0): Releasing backup interface
[  523.315719] bond0 (unregistering): Released all slaves