[  515.252991] bond0: (slave eth0): making interface the new active one
[  515.253059] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.451129] bond0: (slave eth0): Releasing backup interface
[  519.553993] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.744023] bond0: (slave eth0): Releasing backup interface
[  523.767070] bond0 (unregistering): Released all slaves