[  512.068954] bond0: (slave eth0): making interface the new active one
[  512.069021] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.313875] bond0: (slave eth0): Releasing backup interface
[  516.424105] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.603765] bond0: (slave eth0): Releasing backup interface
[  520.643004] bond0 (unregistering): Released all slaves