[  513.443092] bond0: (slave eth0): making interface the new active one
[  513.443179] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.670915] bond0: (slave eth0): Releasing backup interface
[  517.781641] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.959821] bond0: (slave eth0): Releasing backup interface
[  522.001764] bond0 (unregistering): Released all slaves