[  515.512322] bond0: (slave eth0): making interface the new active one
[  515.512393] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.704458] bond0: (slave eth0): Releasing backup interface
[  519.818061] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.990039] bond0: (slave eth0): Releasing backup interface
[  524.015943] bond0 (unregistering): Released all slaves