[  515.798559] bond0: (slave eth0): making interface the new active one
[  515.798675] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.019354] bond0: (slave eth0): Releasing backup interface
[  520.106380] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.243171] bond0: (slave eth0): Releasing backup interface
[  524.267167] bond0 (unregistering): Released all slaves