104 lines
3.4 KiB
Markdown
104 lines
3.4 KiB
Markdown
# reximemoDNS
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A small local DNS helper for connecting Flipnote Studio to **RexiMemo** when a network or ISP does not reliably allow the console to use RexiMemo's public DNS directly.
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It runs on a computer on the same local network as the Nintendo DSi. Flipnote Studio's Nintendo/Hatena hostnames are redirected to RexiMemo, while unrelated DNS lookups are forwarded to a normal upstream resolver.
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## Default RexiMemo routing
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reximemoDNS redirects these hostnames to RexiMemo's legacy service address:
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- `nas.nintendowifi.net`
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- `flipnote.hatena.com`
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- `ugomemo.hatena.ne.jp`
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The default RexiMemo server IP is **141.147.76.115**. All other DNS queries are forwarded to **8.8.8.8** by default.
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`conntest.nintendowifi.net` is deliberately not intercepted, matching RexiMemo's server-side DNS configuration.
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## Setup
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1. Put the computer running reximemoDNS and the DSi on the same local network.
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2. Install the requirements.
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3. Run reximemoDNS as Administrator/root because DNS uses port 53.
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4. Enter the **Primary DNS** address printed by the program into the DSi connection settings.
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5. Use `008.008.008.008` as Secondary DNS.
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6. Save the connection and open Flipnote Studio → Flipnote Hatena.
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### Install requirements
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```bash
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python -m pip install -r requirements.txt
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```
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### Run
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Windows, from an Administrator terminal:
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```powershell
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python reximemoDNS.py
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```
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Linux/macOS:
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```bash
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sudo python3 reximemoDNS.py
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```
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When it starts, it prints the LAN address to enter on the DSi.
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## Configuration
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The defaults are already set for the current RexiMemo server, but they can be changed with environment variables:
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- `REXIMEMODNS_SERVER_IP` — RexiMemo legacy-service IPv4 address. Default: `141.147.76.115`
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- `REXIMEMODNS_UPSTREAM_DNS` — resolver used for all non-RexiMemo names. Default: `8.8.8.8`
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- `REXIMEMODNS_BIND_IP` — local interface/address on which to listen. By default, reximemoDNS detects the computer's LAN IPv4 address.
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- `REXIMEMODNS_PORT` — DNS listening port. Default: `53`
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Example:
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```bash
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REXIMEMODNS_SERVER_IP=141.147.76.115 REXIMEMODNS_UPSTREAM_DNS=1.1.1.1 sudo python3 reximemoDNS.py
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```
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On Windows PowerShell:
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```powershell
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$env:REXIMEMODNS_SERVER_IP="141.147.76.115"
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$env:REXIMEMODNS_UPSTREAM_DNS="1.1.1.1"
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python reximemoDNS.py
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```
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## Troubleshooting
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If the program cannot bind to port 53, run it as Administrator/root and make sure another DNS server is not already using that port.
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If no console requests appear in the log, check the computer firewall and confirm the DSi's Primary DNS exactly matches the address printed by reximemoDNS.
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If ordinary websites or the DSi connection test stop resolving while reximemoDNS is running, verify that `REXIMEMODNS_UPSTREAM_DNS` points to a reachable DNS resolver.
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For RexiMemo support, join the Discord server: **https://discord.gg/K5mKWvaruF**
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## Building a Windows executable
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Install Nuitka and its build dependencies:
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```powershell
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python -m pip install -r requirements.txt nuitka zstandard
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```
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Then build:
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```powershell
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python -m nuitka --standalone --onefile -o reximemoDNS.exe reximemoDNS.py
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```
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No RexiMemo-specific icon is bundled in this source tree, so the executable uses the default application icon unless you supply one when building.
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## License and attribution
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reximemoDNS is derived from the open-source `sudomemoDNS` project by Austin Burk / Team Sudomemo. The original MIT copyright and license are preserved in `LICENSE`.
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See `NOTICE.md` for attribution and RexiMemo-specific changes.
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