[  514.730239] bond0: (slave eth0): making interface the new active one
[  514.730309] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.940610] bond0: (slave eth0): Releasing backup interface
[  519.045559] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.220046] bond0: (slave eth0): Releasing backup interface
[  523.243964] bond0 (unregistering): Released all slaves