[  515.523800] bond0: (slave eth0): making interface the new active one
[  515.523912] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.772620] bond0: (slave eth0): Releasing backup interface
[  519.888511] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.063254] bond0: (slave eth0): Releasing backup interface
[  524.095228] bond0 (unregistering): Released all slaves