[  512.271722] bond0: (slave eth0): making interface the new active one
[  512.271811] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.504273] bond0: (slave eth0): Releasing backup interface
[  516.614794] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.789967] bond0: (slave eth0): Releasing backup interface
[  520.814891] bond0 (unregistering): Released all slaves