Envelope syncs leave NetworkMap nil and ship the map in NetworkMapEnvelope,
so the nil-map checks read every one of them as config-only: they were never
persisted, and a config-only update coalescing over a pending envelope sync
dropped its map. The version, top-level peer config and checks travel with
the envelope, and a nil session deadline is "no change" like the other
optional fields, so the pending one is carried forward too.
riccardom
e7c7c75ec6