[  515.051437] bond0: (slave eth0): making interface the new active one
[  515.051529] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.263095] bond0: (slave eth0): Releasing backup interface
[  519.361553] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.546054] bond0: (slave eth0): Releasing backup interface
[  523.569020] bond0 (unregistering): Released all slaves