[  511.297133] bond0: (slave eth0): making interface the new active one
[  511.297427] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.623694] bond0: (slave eth0): Releasing backup interface
[  515.805387] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.089160] bond0: (slave eth0): Releasing backup interface
[  520.126119] bond0 (unregistering): Released all slaves