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# Network Infrastructure
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**Last Updated:** 2026-02-06
**Document Version:** 1.1
**Status:** Active Documentation
---
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This directory contains network infrastructure documentation.
## Documents
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- **[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
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- **[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
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- **[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
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- **[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
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**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.
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## Related Documentation
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- **[../11-references/NETWORK_CONFIGURATION_MASTER.md ](../11-references/NETWORK_CONFIGURATION_MASTER.md )** - Network topology (single source of truth)
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- **[../02-architecture/NETWORK_ARCHITECTURE.md ](../02-architecture/NETWORK_ARCHITECTURE.md )** - Complete network architecture
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- **[../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