[  519.012292] bond0: (slave eth0): making interface the new active one
[  519.012374] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.222306] bond0: (slave eth0): Releasing backup interface
[  523.340279] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.505923] bond0: (slave eth0): Releasing backup interface
[  527.544902] bond0 (unregistering): Released all slaves