[  517.524705] bond0: (slave eth0): making interface the new active one
[  517.524785] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.682154] bond0: (slave eth0): Releasing backup interface
[  521.766782] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.990989] bond0: (slave eth0): Releasing backup interface
[  526.032923] bond0 (unregistering): Released all slaves