[  502.268870] bond0: (slave eth0): making interface the new active one
[  502.268964] bond0: (slave eth0): Enslaving as an active interface with an up link
[  506.439359] bond0: (slave eth0): Releasing backup interface
[  506.502177] bond0: (slave eth0): Enslaving as an active interface with an up link
[  510.667905] bond0: (slave eth0): Releasing backup interface
[  510.707327] bond0 (unregistering): Released all slaves