[  515.171822] bond0: (slave eth0): making interface the new active one
[  515.171901] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.366384] bond0: (slave eth0): Releasing backup interface
[  519.442319] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.597071] bond0: (slave eth0): Releasing backup interface
[  523.631059] bond0 (unregistering): Released all slaves