[  513.273101] bond0: (slave eth0): making interface the new active one
[  513.273209] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.461231] bond0: (slave eth0): Releasing backup interface
[  517.546695] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.748386] bond0: (slave eth0): Releasing backup interface
[  521.776356] bond0 (unregistering): Released all slaves