[  504.221358] bond0: (slave eth0): making interface the new active one
[  504.221465] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.438337] bond0: (slave eth0): Releasing backup interface
[  508.523879] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.719689] bond0: (slave eth0): Releasing backup interface
[  512.761706] bond0 (unregistering): Released all slaves