[  513.486021] bond0: (slave eth0): making interface the new active one
[  513.486108] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.718607] bond0: (slave eth0): Releasing backup interface
[  517.839102] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.011000] bond0: (slave eth0): Releasing backup interface
[  522.051016] bond0 (unregistering): Released all slaves