[  502.532275] bond0: (slave eth0): making interface the new active one
[  502.532390] bond0: (slave eth0): Enslaving as an active interface with an up link
[  506.707999] bond0: (slave eth0): Releasing backup interface
[  506.791503] bond0: (slave eth0): Enslaving as an active interface with an up link
[  510.940571] bond0: (slave eth0): Releasing backup interface
[  510.974433] bond0 (unregistering): Released all slaves