[  502.522111] bond0: (slave eth0): making interface the new active one
[  502.522180] bond0: (slave eth0): Enslaving as an active interface with an up link
[  506.709423] bond0: (slave eth0): Releasing backup interface
[  506.806815] bond0: (slave eth0): Enslaving as an active interface with an up link
[  510.992995] bond0: (slave eth0): Releasing backup interface
[  511.029961] bond0 (unregistering): Released all slaves