[  515.274410] bond0: (slave eth0): making interface the new active one
[  515.274519] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.435214] bond0: (slave eth0): Releasing backup interface
[  519.488456] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.658069] bond0: (slave eth0): Releasing backup interface
[  523.681028] bond0 (unregistering): Released all slaves