[  515.746491] bond0: (slave eth0): making interface the new active one
[  515.746577] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.956800] bond0: (slave eth0): Releasing backup interface
[  520.041198] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.177361] bond0: (slave eth0): Releasing backup interface
[  524.210486] bond0 (unregistering): Released all slaves