[  512.561356] bond0: (slave eth0): making interface the new active one
[  512.561424] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.756662] bond0: (slave eth0): Releasing backup interface
[  516.860028] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.049281] bond0: (slave eth0): Releasing backup interface
[  521.071116] bond0 (unregistering): Released all slaves