[  515.742527] bond0: (slave eth0): making interface the new active one
[  515.742614] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.960247] bond0: (slave eth0): Releasing backup interface
[  520.060653] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.255098] bond0: (slave eth0): Releasing backup interface
[  524.289000] bond0 (unregistering): Released all slaves