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dazzling-no-more
e70947ff0d
Closes #251. In Android Full mode, Telegram worked but Google search and most other websites failed silently. `apps_script` mode on the same setup was unaffected. **Root cause**: the udpgw magic destination (`198.18.0.1:7300`) was inside `198.18.0.0/15` — the exact range tun2proxy's `--dns virtual` allocator uses to synthesise fake IPs for hostname lookups. Whenever virtual DNS assigned `198.18.0.1` to a real hostname, that hostname's traffic was intercepted by tun2proxy *itself* as a udpgw connection and dropped. Telegram was immune because it uses hardcoded numeric IPs; `apps_script` mode was immune because it never sets `--udpgw-server`. **Fix**: move `UDPGW_MAGIC_IP` to `192.0.2.1` (RFC 5737 TEST-NET-1) — outside any virtual-DNS allocation pool. Coordinated change across the tunnel-node constant and the Android `--udpgw-server` flag. ## Back-compat v1.9.25 tunnel-nodes still recognise the legacy `198.18.0.1:7300` for one deprecation cycle (removal in v1.10.0). | Android | Tunnel-node | Full-mode UDP | |---|---|---| | v1.9.25 | v1.9.25 | ✅ fully fixed | | ≤v1.9.24 | v1.9.25 | ⚠️ handshake works (legacy IP still recognised), but the old client still asks tun2proxy for `198.18.0.1`, so the #251 virtual-DNS collision is still live on-device | | v1.9.25 | ≤v1.9.24 | ❌ breaks silently (old node rejects `192.0.2.1`) | The fix lives on the client side (which magic IP it asks tun2proxy to reserve). The back-compat is on the tunnel-node side (accepting both during the deprecation window). ## Verified locally - `cargo test --lib --release`: 231/231 ✅ - `cargo build --release --features ui --bin mhrv-rs-ui`: clean ✅ - `(cd tunnel-node && cargo test --release)`: 38/38 ✅ (+2 new tests for the IP change) ## Version bump Cargo.toml already bumped to 1.9.25 in this PR; `docs/changelog/v1.9.25.md` pre-baked. Will combine with any other PRs landing into v1.9.25 before tagging. Reviewed via Anthropic Claude. Co-Authored-By: dazzling-no-more <noreply@github.com> Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>