[  514.545596] bond0: (slave eth0): making interface the new active one
[  514.545679] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.747572] bond0: (slave eth0): Releasing backup interface
[  518.862764] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.030866] bond0: (slave eth0): Releasing backup interface
[  523.053793] bond0 (unregistering): Released all slaves