[  520.097376] bond0: (slave eth0): making interface the new active one
[  520.097490] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.297618] bond0: (slave eth0): Releasing backup interface
[  524.359085] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.525084] bond0: (slave eth0): Releasing backup interface
[  528.553084] bond0 (unregistering): Released all slaves