[  519.435209] bond0: (slave eth0): making interface the new active one
[  519.435322] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.595135] bond0: (slave eth0): Releasing backup interface
[  523.661398] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.817394] bond0: (slave eth0): Releasing backup interface
[  527.845312] bond0 (unregistering): Released all slaves