[  515.741511] bond0: (slave eth0): making interface the new active one
[  515.741596] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.959224] bond0: (slave eth0): Releasing backup interface
[  520.061370] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.245090] bond0: (slave eth0): Releasing backup interface
[  524.272947] bond0 (unregistering): Released all slaves