[  503.990069] bond0: (slave eth0): making interface the new active one
[  503.990217] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.181583] bond0: (slave eth0): Releasing backup interface
[  508.272239] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.469458] bond0: (slave eth0): Releasing backup interface
[  512.496443] bond0 (unregistering): Released all slaves