[  512.892713] bond0: (slave eth0): making interface the new active one
[  512.892987] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.330247] bond0: (slave eth0): Releasing backup interface
[  517.583371] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.884112] bond0: (slave eth0): Releasing backup interface
[  521.920920] bond0 (unregistering): Released all slaves