[  502.574539] bond0: (slave eth0): making interface the new active one
[  502.574616] bond0: (slave eth0): Enslaving as an active interface with an up link
[  506.773659] bond0: (slave eth0): Releasing backup interface
[  506.853349] bond0: (slave eth0): Enslaving as an active interface with an up link
[  511.000289] bond0: (slave eth0): Releasing backup interface
[  511.027199] bond0 (unregistering): Released all slaves