Hi, I'm Vincent
I build AI products end to end and run four ASNs.
Fremont, CA · Founder of Moe AI & OwO Network
Master's in Computer Science from the University of Pittsburgh. Around 30k stars sit across the projects I write and maintain on GitHub. I run Moe AI LLC and OwO Network; this site is where the notes go: networking, AI, infrastructure, visas, and a lot of flights.
Recent posts
All 86 posts →Why I Still Care About Open Source
Open source is up for debate again, so here's where I stand: GitHub as the one place people give away all their work, who sends issues and who sends PRs, the people and companies who take your code without credit, why AI hasn't made any of it pointless, and a Swift SDK for Lark that will never earn a cent but might save someone five minutes.
LatestFrom iKuai to RouterOS, and Back to Surge VM Gateway
I moved my home router off iKuai and onto RouterOS CHR running inside PVE — partly because iKuai 4.0's UI is a rough UniFi knock-off, and more worryingly because packet captures have shown it quietly phoning home in the background; and partly because I wanted the router itself to be just another VM. This post covers the RouterOS setup (dual-WAN PPPoE with PCC, a caching DNS resolver, free IP Cloud DDNS, port forwarding with hairpin and NAT loopback), the trick that finally solved a long-standing annoyance — one DDNS name that reaches the public IP from outside but gets looped back to the right internal host by port when I'm home, since a single domain sitting in front of many different internal IPs can't be split by DNS alone — and the conclusion I kept coming back to: the real domestic/overseas traffic splitting belongs on the Surge VM Gateway, not the router. The router does the plumbing; Surge does the brains. Plus a small door-buzzer automation running on the same PVE box.
Your Flight Almost Never Flies the Great Circle
The great circle is the provably shortest path between two airports — and airlines almost never fly it. I checked 107 of my own flights against their actual ADS-B tracks: on average they flew 12.9% farther than the great circle, and one hop came in 44% over. Here's why the shortest route is mostly a fiction.
Goodbye Hugo: I Rebuilt My Blog with Astro Overnight
After four or five years on Hugo, I rewrote this blog on AstroPaper — by typing /goal in Claude Code before bed and reviewing a working site the next morning. Three weeks and ~50 small commits later, every pixel is customized, down to a comment system that is entirely my own implementation.
Give Your Camera Real GPS: A No-Internet Hardware Fix with furble
Most cameras still ship without a GPS module, so photos come out of the card with no location data in their EXIF. The official phone apps are supposed to sync coordinates over Bluetooth, but for shoot-as-you-walk travel they fall apart: the BLE link drops when the camera sleeps, it rarely reconnects in time, and the background app gets killed by the OS. This post walks through everything I tried — Garmin GPX backfilling, low-power tracking apps, and my own Koko app built on the reverse-engineered furble protocols — and why none of them fully solved the phone-to-camera flakiness. The real fix turned out to be a tiny piece of hardware: an M5StickS3 plus a GPS unit, flashed with furble, that pairs straight to the camera, needs no internet, and feeds live coordinates into the EXIF. Includes a shopping list with USD/CNY prices and a realistic battery-life estimate for the 250mAh build.
The Right Way to Use WebArena Indigo
WebArena Indigo is a cheap, good-value Japanese VPS that makes a great landing node. But if you front it with a relay and push traffic over a GRE tunnel like I did, GRE over IPv4 gets rate-limited the moment you run a speed test — the connection collapses right after the first burst. This post walks through what I tried (realm public forwarding, IPv4 GRE, IPv6 GRE) and how I ruled out snell, MTU, DNS and the qdisc one by one, landing on the conclusion that only GRE over IPv6 (ip6gre) reliably escapes the rate limiting. Plus a note on picking between the 500M/4-core and 1000M/6-core shared plans.
Looking glass
AS30700 view- Prefixes
- 23.191.8.0/242602:f7ee:fd::/48
- PoPs
- FremontTorontoTaipei
In the air
Flight log →- Flights
- 121
- Miles flown
- 183,766
- Airports
- 44
- Countries & regions
- 12
7.4× around the planet so far.
- Most flown
- Cathay Pacific (15), China Eastern (11), American Airlines (10)
- Home airports
- PVG · HKG · HND