[  511.573992] bond0: (slave eth0): making interface the new active one
[  511.574086] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.806856] bond0: (slave eth0): Releasing backup interface
[  515.931256] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.152126] bond0: (slave eth0): Releasing backup interface
[  520.194014] bond0 (unregistering): Released all slaves