[  515.476800] bond0: (slave eth0): making interface the new active one
[  515.476905] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.702448] bond0: (slave eth0): Releasing backup interface
[  519.809914] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.991066] bond0: (slave eth0): Releasing backup interface
[  524.020023] bond0 (unregistering): Released all slaves