[  513.210157] bond0: (slave eth0): making interface the new active one
[  513.210246] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.397176] bond0: (slave eth0): Releasing backup interface
[  517.483091] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.618474] bond0: (slave eth0): Releasing backup interface
[  521.645467] bond0 (unregistering): Released all slaves