MikroTik RB5009, residential solar, and plug-in EV — home-lab build logs.

Infrastructure

A nine-part series building one MikroTik RB5009 from a flat LAN into a segmented, IPv6-capable, self-hosted home network behind residential CGNAT. Start at the index, or jump to a layer — each post stands alone. Steps 4 and 5 are two equal paths to routable IPv6; step 9 is the clean-slate multi-homed finale.

• Series 1/9 · Series index · 2026-05

  A small home network behind CGNAT

  Series index: overview, topology, address plan, the VPS-vs-Route64 path-choice matrix, and the ULA-only-trusted-VLAN update that keeps streaming off the routable-IPv6 path. Start here.

• Series 2/9 · Build log · 2026-05

  Trusted, IoT, and Guest VLANs on RouterOS

  Split a flat home LAN into trusted, IoT, and Guest VLANs with two UniFi APs on hybrid trunks, plus a reviewable east-west firewall. Pure IPv4 plus 802.1Q; no IPv6, no VPS. The foundation the rest of the series sits on.

• Series 3/9 · Build log · 2026-05

  Encrypted DNS with a stable resolver address on RouterOS

  Resolve upstream over Cloudflare DoH and hand clients a resolver address that never changes — a locally assigned ULA over RA RDNSS. No VLANs, no IPv6 uplink; works on a flat IPv4-only LAN.

• Series 4/9 · Build log · 2026-05

  Routed IPv6 over CGNAT via a VPS-routed /48

  Equal path A: a $3/mo VPS that routes a /48 to its instance, WireGuard from the RB5009, eBGP between them. Includes Ubuntu/BIRD, VyOS, and CHR relay variants.

• Series 5/9 · Build log · 2026-05

  Routed IPv6 over CGNAT via Route64

  Equal path B: Route64's free WireGuard /56 — a native global /64 per VLAN, nothing to operate, fast fail-to-IPv4 on outage. Single broker-managed uplink by design.

• Series 6/9 · Build log · 2026-05

  Per-VLAN IPv6 on RouterOS

  Plumb the routable IPv6 you just stood up through to every VLAN: GUA + ULA + RA RDNSS per VLAN, IPv6 forward-chain isolation, and SLAAC anti-spoof. Path-agnostic — three per-VLAN /64 placeholders fold the /48-vs-/56 difference into one substitution table.

• Series 7/9 · Build log · 2026-05

  Fast IPv6 failover on RouterOS

  Add BFD to the existing BGP session over WireGuard — fast default-route withdrawal with Ubuntu/BIRD, VyOS, or CHR relay variants. VPS path only.

• Series 8/9 · Build log · 2026-05

  Running the UniFi controller on the RB5009

  Run the UniFi Network Application and its MongoDB on a MikroTik RB5009 as RouterOS containers — no second always-on box. USB swap, the ARMv8.0-A Mongo 4.4.18 pin, veths, memory caps, verification.

• Series 9/9 · Series finale · 2026-05

  Multi-homing IPv6 over CGNAT on RouterOS

  Run the VPS and Route64 paths at the same time under one announceable /48: own ASN, two BGP sessions, BFD on the VPS path, and RouterOS best-path selecting the active default.

• Build log · 2026-05

  Replacing a Converge ONT with a GPON SFP stick on the RB5009

  Skyworth GN630V to ODI DFP-34X-2C2 in a MikroTik RB5009: the SC/APC to SC/UPC connector gotcha, VLAN 10 DHCP handoff, and the minimum stick config that worked. Standalone — not part of the series above.

Home & Energy

• Field log · 2026-05

  Net Metering Journey in General Trias

  A realistic, step-by-step account of getting a 6 kWp rooftop array approved for net metering with Meralco in Cavite — the PEE-sealed A3 SLD, the forms, the venues, the fees, and a ~50-day timeline.

• Case study · 2026-05

  BYD Sealion 6 PHEV running cost — Cavite, Philippines

  5,123 km of odometer- and meter-tracked driving: electric-vs-fuel running cost, 63% EV usage split, combined 6.0 L/100km efficiency, and battery health.

• Case study · 2026-04

  Residential 6.5 kWp solar performance — Cavite, Philippines

  Five months of real generation, self-sufficiency, battery behavior, and bill impact from a 6.5 kWp / 14.3 kWh / 8 kW system, with monthly tariff math and ROI payback.

• Guide · 2025-12

  Solar Panel Installation Application Guide for Lancaster New City

  The exact CIDC documents to prepare before installing solar panels on your Lancaster New City unit — with a copy-ready Letter of Intent template, where to submit, and how to get your gate pass on the same visit.