[  499.256823] bond0: (slave eth0): making interface the new active one
[  499.256900] bond0: (slave eth0): Enslaving as an active interface with an up link
[  503.438339] bond0: (slave eth0): Releasing backup interface
[  503.518988] bond0: (slave eth0): Enslaving as an active interface with an up link
[  507.663051] bond0: (slave eth0): Releasing backup interface
[  507.695045] bond0 (unregistering): Released all slaves