[  519.708509] bond0: (slave eth0): making interface the new active one
[  519.708589] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.914756] bond0: (slave eth0): Releasing backup interface
[  523.988506] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.147478] bond0: (slave eth0): Releasing backup interface
[  528.177452] bond0 (unregistering): Released all slaves