[  521.107000] bond0: (slave eth0): making interface the new active one
[  521.107083] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.270367] bond0: (slave eth0): Releasing backup interface
[  525.346523] bond0: (slave eth0): Enslaving as an active interface with an up link
[  529.497449] bond0: (slave eth0): Releasing backup interface
[  529.530464] bond0 (unregistering): Released all slaves