[  513.054680] bond0: (slave eth0): making interface the new active one
[  513.054760] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.269903] bond0: (slave eth0): Releasing backup interface
[  517.370009] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.562940] bond0: (slave eth0): Releasing backup interface
[  521.586875] bond0 (unregistering): Released all slaves