[  519.138917] bond0: (slave eth0): making interface the new active one
[  519.139013] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.356321] bond0: (slave eth0): Releasing backup interface
[  523.472312] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.635877] bond0: (slave eth0): Releasing backup interface
[  527.668789] bond0 (unregistering): Released all slaves