[  510.040764] bond0: (slave eth0): making interface the new active one
[  510.040862] bond0: (slave eth0): Enslaving as an active interface with an up link
[  514.253638] bond0: (slave eth0): Releasing backup interface
[  514.331287] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.484103] bond0: (slave eth0): Releasing backup interface
[  518.513050] bond0 (unregistering): Released all slaves