[  515.188016] bond0: (slave eth0): making interface the new active one
[  515.188092] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.413687] bond0: (slave eth0): Releasing backup interface
[  519.521129] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.696512] bond0: (slave eth0): Releasing backup interface
[  523.729388] bond0 (unregistering): Released all slaves