[  512.801312] bond0: (slave eth0): making interface the new active one
[  512.801391] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.029057] bond0: (slave eth0): Releasing backup interface
[  517.145944] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.314923] bond0: (slave eth0): Releasing backup interface
[  521.350906] bond0 (unregistering): Released all slaves