[  515.628747] bond0: (slave eth0): making interface the new active one
[  515.628811] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.837897] bond0: (slave eth0): Releasing backup interface
[  519.946055] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.115968] bond0: (slave eth0): Releasing backup interface
[  524.143953] bond0 (unregistering): Released all slaves