Hi, The behaviour is upto -current. i386, amd64
When RDE gets update with MP_REACH_NLRI containing new labelstack (with all other attr unchanged) for some active prefix, it cannot write new label to route in kernel. Although, path_update() knows the new labelstack, but prefix which will be sent to rde_send_kroute linked with old label from current active path. Moreover, im not sure, but even if there will be possible to update the label, there is still no chance to do it, because flag F_MPLS is not set while RTM_CHANGE.
