[  515.556388] bond0: (slave eth0): making interface the new active one
[  515.556474] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.764928] bond0: (slave eth0): Releasing backup interface
[  519.855889] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.053243] bond0: (slave eth0): Releasing backup interface
[  524.091279] bond0 (unregistering): Released all slaves