[  519.177063] bond0: (slave eth0): making interface the new active one
[  519.177175] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.345837] bond0: (slave eth0): Releasing backup interface
[  523.417386] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.573508] bond0: (slave eth0): Releasing backup interface
[  527.611402] bond0 (unregistering): Released all slaves