[  515.284961] bond0: (slave eth0): making interface the new active one
[  515.285057] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.441624] bond0: (slave eth0): Releasing backup interface
[  519.509724] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.671400] bond0: (slave eth0): Releasing backup interface
[  523.705408] bond0 (unregistering): Released all slaves