[  516.448650] bond0: (slave eth0): making interface the new active one
[  516.448766] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.661700] bond0: (slave eth0): Releasing backup interface
[  520.738423] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.886418] bond0: (slave eth0): Releasing backup interface
[  524.915436] bond0 (unregistering): Released all slaves