[  519.520730] bond0: (slave eth0): making interface the new active one
[  519.520814] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.736545] bond0: (slave eth0): Releasing backup interface
[  523.839822] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.028991] bond0: (slave eth0): Releasing backup interface
[  528.071872] bond0 (unregistering): Released all slaves