[  504.899159] bond0: (slave eth0): making interface the new active one
[  504.899239] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.069631] bond0: (slave eth0): Releasing backup interface
[  509.154724] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.298928] bond0: (slave eth0): Releasing backup interface
[  513.336825] bond0 (unregistering): Released all slaves