[  514.194947] bond0: (slave eth0): making interface the new active one
[  514.195090] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.412126] bond0: (slave eth0): Releasing backup interface
[  518.499390] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.638565] bond0: (slave eth0): Releasing backup interface
[  522.665399] bond0 (unregistering): Released all slaves