[  519.527358] bond0: (slave eth0): making interface the new active one
[  519.527465] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.724093] bond0: (slave eth0): Releasing backup interface
[  523.804454] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.949284] bond0: (slave eth0): Releasing backup interface
[  527.974205] bond0 (unregistering): Released all slaves