[  518.420897] bond0: (slave eth0): making interface the new active one
[  518.420973] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.647805] bond0: (slave eth0): Releasing backup interface
[  522.757128] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.943052] bond0: (slave eth0): Releasing backup interface
[  526.973939] bond0 (unregistering): Released all slaves