[  502.542642] bond0: (slave eth0): making interface the new active one
[  502.542712] bond0: (slave eth0): Enslaving as an active interface with an up link
[  506.708619] bond0: (slave eth0): Releasing backup interface
[  506.772814] bond0: (slave eth0): Enslaving as an active interface with an up link
[  510.927391] bond0: (slave eth0): Releasing backup interface
[  510.970306] bond0 (unregistering): Released all slaves