[  515.034465] bond0: (slave eth0): making interface the new active one
[  515.034561] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.247766] bond0: (slave eth0): Releasing backup interface
[  519.325427] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.479740] bond0: (slave eth0): Releasing backup interface
[  523.512733] bond0 (unregistering): Released all slaves