# Network Infrastructure

**Last Updated:** 2026-02-06  
**Document Version:** 1.1  
**Status:** Active Documentation

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This directory contains network infrastructure documentation.

## Documents

- **[CHECK_ALL_UPDATES_AND_CLOUDFLARE_TUNNELS.md](CHECK_ALL_UPDATES_AND_CLOUDFLARE_TUNNELS.md)** ⭐⭐⭐ - Config updates (e.g. Dev VM .59) + all Cloudflare tunnels inventory and verification
- **[CLOUDFLARE_ROUTING_MASTER.md](CLOUDFLARE_ROUTING_MASTER.md)** ⭐⭐⭐ - Edge routing (Fastly/Direct + Option B for RPC)
- **[OPTION_B_RPC_VIA_TUNNEL_RUNBOOK.md](OPTION_B_RPC_VIA_TUNNEL_RUNBOOK.md)** ⭐⭐⭐ - RPC via Cloudflare Tunnel (6 hostnames)
- **[EDGE_PORT_VERIFICATION_RUNBOOK.md](EDGE_PORT_VERIFICATION_RUNBOOK.md)** ⭐⭐ - Verify 76.53.10.36:80/443 from internet
- **[E2E_CLOUDFLARE_DOMAINS_RUNBOOK.md](E2E_CLOUDFLARE_DOMAINS_RUNBOOK.md)** ⭐⭐⭐ - E2E for all Cloudflare domains (ACCEPT_ANY_DNS=1 when Option B)
- **[E2E_RPC_EDGE_LIMITATION.md](E2E_RPC_EDGE_LIMITATION.md)** - When edge blocks RPC POST; Option B / ACCEPT_ANY_DNS
- **[EXPLORER_PUBLIC_URL_UNREACHABLE_FIX.md](EXPLORER_PUBLIC_URL_UNREACHABLE_FIX.md)** - explorer.d-bis.org timeout: DNS vs NAT hairpin / tunnel / port forward
- **[FIX_ALL_ISSUES_RUNBOOK.md](FIX_ALL_ISSUES_RUNBOOK.md)** - Single runbook: explorer timeout (hosts, hairpin), required/optional fixes, script
- **[NETWORK_STATUS.md](NETWORK_STATUS.md)** ⭐⭐ - Current network status and configuration
- **[NGINX_ARCHITECTURE_RPC.md](NGINX_ARCHITECTURE_RPC.md)** ⭐ - NGINX RPC architecture
- **[CLOUDFLARE_NGINX_INTEGRATION.md](CLOUDFLARE_NGINX_INTEGRATION.md)** ⭐ - Cloudflare + NGINX integration
- **[RPC_NODE_TYPES_ARCHITECTURE.md](RPC_NODE_TYPES_ARCHITECTURE.md)** ⭐ - RPC node architecture
- **[RPC_TEMPLATE_TYPES.md](RPC_TEMPLATE_TYPES.md)** ⭐ - RPC template types

## Quick Reference

**Edge:** UDM Pro (76.53.10.34); origin 76.53.10.36 → NPMplus 192.168.11.167. **Option B:** 6 RPC hostnames via Cloudflare Tunnel. E2E: `ACCEPT_ANY_DNS=1 bash scripts/verify/verify-end-to-end-routing.sh --profile=public` when using Option B.

## Related Documentation

- **[../11-references/NETWORK_CONFIGURATION_MASTER.md](../11-references/NETWORK_CONFIGURATION_MASTER.md)** - Network topology (single source of truth)
- **[../02-architecture/NETWORK_ARCHITECTURE.md](../02-architecture/NETWORK_ARCHITECTURE.md)** - Complete network architecture
- **[../04-configuration/RPC_ENDPOINTS_MASTER.md](../04-configuration/RPC_ENDPOINTS_MASTER.md)** - RPC proxy and DNS
- **[../04-configuration/cloudflare/TUNNEL_SFVALLEY01_INSTALL.md](../04-configuration/cloudflare/TUNNEL_SFVALLEY01_INSTALL.md)** - Option B tunnel connector install