- Switch overrides from HashMap to BTreeMap — deterministic iteration by type, drops the manual sort when logging. - Rename the flat_map closure's inner `ips` to `addrs` to stop shadowing the outer Vec<String>. - Trim the Suite 8 TEST-NET-1 comment to keep the "why" and drop mechanism narration. - Drop a redundant sleep 1 after wait — wait already blocks on exit.