[  515.328168] bond0: (slave eth0): making interface the new active one
[  515.328238] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.582706] bond0: (slave eth0): Releasing backup interface
[  519.685781] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.864044] bond0: (slave eth0): Releasing backup interface
[  523.897966] bond0 (unregistering): Released all slaves