[  512.462663] bond0: (slave eth0): making interface the new active one
[  512.462754] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.695312] bond0: (slave eth0): Releasing backup interface
[  516.800121] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.986111] bond0: (slave eth0): Releasing backup interface
[  521.017955] bond0 (unregistering): Released all slaves