[  514.447826] bond0: (slave eth0): making interface the new active one
[  514.447914] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.653294] bond0: (slave eth0): Releasing backup interface
[  518.755961] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.937049] bond0: (slave eth0): Releasing backup interface
[  522.956901] bond0 (unregistering): Released all slaves