Code review comment for ~dmitriis/+git/nova-specs:transport-node-providers

Dmitrii,

This is really great stuff. You introduce the feature in a way that should allow someone with little or zero knowledge about how DPU's work to understand what we're trying to do. Each critical element is described in clear detail.

I have a small nit and a comment in-line, other than that this should be ready to ship from my POV.