[  514.692161] bond0: (slave eth0): making interface the new active one
[  514.692244] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.939998] bond0: (slave eth0): Releasing backup interface
[  519.059372] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.220169] bond0: (slave eth0): Releasing backup interface
[  523.247335] bond0 (unregistering): Released all slaves