[  515.560637] bond0: (slave eth0): making interface the new active one
[  515.560711] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.764811] bond0: (slave eth0): Releasing backup interface
[  519.871369] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.049785] bond0: (slave eth0): Releasing backup interface
[  524.078741] bond0 (unregistering): Released all slaves