[  515.578519] bond0: (slave eth0): making interface the new active one
[  515.578613] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.765116] bond0: (slave eth0): Releasing backup interface
[  519.847007] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.988189] bond0: (slave eth0): Releasing backup interface
[  524.022089] bond0 (unregistering): Released all slaves