[  511.700630] bond0: (slave eth0): making interface the new active one
[  511.700725] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.933770] bond0: (slave eth0): Releasing backup interface
[  516.037299] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.222442] bond0: (slave eth0): Releasing backup interface
[  520.252004] bond0 (unregistering): Released all slaves