[  514.829410] bond0: (slave eth0): making interface the new active one
[  514.829507] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.067105] bond0: (slave eth0): Releasing backup interface
[  519.167903] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.354940] bond0: (slave eth0): Releasing backup interface
[  523.388899] bond0 (unregistering): Released all slaves