[  520.791641] bond0: (slave eth0): making interface the new active one
[  520.791728] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.017225] bond0: (slave eth0): Releasing backup interface
[  525.113184] bond0: (slave eth0): Enslaving as an active interface with an up link
[  529.308635] bond0: (slave eth0): Releasing backup interface