[  515.926918] bond0: (slave eth0): making interface the new active one
[  515.927019] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.073755] bond0: (slave eth0): Releasing backup interface
[  520.133562] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.305438] bond0: (slave eth0): Releasing backup interface