[  515.212421] bond0: (slave eth0): making interface the new active one
[  515.212504] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.451305] bond0: (slave eth0): Releasing backup interface
[  519.546473] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.741076] bond0: (slave eth0): Releasing backup interface
[  523.772918] bond0 (unregistering): Released all slaves