[  515.343570] bond0: (slave eth0): making interface the new active one
[  515.343702] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.643492] bond0: (slave eth0): Releasing backup interface
[  519.766916] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.990852] bond0: (slave eth0): Releasing backup interface
[  524.018403] bond0 (unregistering): Released all slaves