[  512.750819] bond0: (slave eth0): making interface the new active one
[  512.750898] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.958306] bond0: (slave eth0): Releasing backup interface
[  517.062584] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.233133] bond0: (slave eth0): Releasing backup interface
[  521.271075] bond0 (unregistering): Released all slaves