[  512.073182] bond0: (slave eth0): making interface the new active one
[  512.073279] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.310484] bond0: (slave eth0): Releasing backup interface
[  516.423169] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.597116] bond0: (slave eth0): Releasing backup interface
[  520.625062] bond0 (unregistering): Released all slaves