[  519.759421] bond0: (slave eth0): making interface the new active one
[  519.759496] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.918566] bond0: (slave eth0): Releasing backup interface
[  523.990128] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.142656] bond0: (slave eth0): Releasing backup interface
[  528.159556] bond0 (unregistering): Released all slaves