[  516.351479] bond0: (slave eth0): making interface the new active one
[  516.351565] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.603044] bond0: (slave eth0): Releasing backup interface
[  520.713539] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.883982] bond0: (slave eth0): Releasing backup interface
[  524.921899] bond0 (unregistering): Released all slaves