Transport measurement

E1 requires two distinct consumer NAT classes, including one symmetric peer. The two endpoints must be independently owned and must not be cloud VMs or shared hosting. Cloud peers can contribute to E2/E4 baselines; they do not supply a consumer observation.

A peer is eligible only after:

• a self-serve nat-probe/2 classification;
• a declared access network/ASN and independence attestation;
• a documented access window and data budget;
• a health check against the deployed two-address probe.

Unclassified, duplicate-class, cloud/VPS and synthetic-NAT peers are recorded as unavailable, never substituted. This page is not a claim that the current node or kit is ready.