[  516.308870] bond0: (slave eth0): making interface the new active one
[  516.308955] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.540139] bond0: (slave eth0): Releasing backup interface
[  520.648742] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.832283] bond0: (slave eth0): Releasing backup interface