[  517.702188] bond0: (slave eth0): making interface the new active one
[  517.702296] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.949558] bond0: (slave eth0): Releasing backup interface
[  522.070507] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.297984] bond0: (slave eth0): Releasing backup interface
[  526.328921] bond0 (unregistering): Released all slaves