[  515.600391] bond0: (slave eth0): making interface the new active one
[  515.600485] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.790931] bond0: (slave eth0): Releasing backup interface
[  519.902910] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.084775] bond0: (slave eth0): Releasing backup interface
[  524.122609] bond0 (unregistering): Released all slaves