[  519.386445] bond0: (slave eth0): making interface the new active one
[  519.386516] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.563483] bond0: (slave eth0): Releasing backup interface
[  523.673554] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.850387] bond0: (slave eth0): Releasing backup interface
[  527.895344] bond0 (unregistering): Released all slaves