[  504.392188] bond0: (slave eth0): making interface the new active one
[  504.392297] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.567059] bond0: (slave eth0): Releasing backup interface
[  508.639829] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.787644] bond0: (slave eth0): Releasing backup interface
[  512.821635] bond0 (unregistering): Released all slaves