[  512.919724] bond0: (slave eth0): making interface the new active one
[  512.919791] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.144893] bond0: (slave eth0): Releasing backup interface
[  517.254517] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.431176] bond0: (slave eth0): Releasing backup interface
[  521.459681] bond0 (unregistering): Released all slaves