[  515.613253] bond0: (slave eth0): making interface the new active one
[  515.613341] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.838621] bond0: (slave eth0): Releasing backup interface
[  519.937699] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.122020] bond0: (slave eth0): Releasing backup interface
[  524.160932] bond0 (unregistering): Released all slaves