[  519.039463] bond0: (slave eth0): making interface the new active one
[  519.039544] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.211418] bond0: (slave eth0): Releasing backup interface
[  523.282555] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.442201] bond0: (slave eth0): Releasing backup interface
[  527.480243] bond0 (unregistering): Released all slaves