lessroutes

Generate a minimal set of routes based on country. Both IPv4 and IPv6 are supported. Inspired by bestroutetb.

Building

First, install Rust toolchain with https://rustup.rs/. Then, you can build and install lessroutes with cargo.

$ cargo install --path .

Usage

Assume you want to route traffic to the US and Japan to gateway A, and traffic to Hong Kong and the UK to gateway B. You will specify the --gateway argument as lessroutes --gateway a=US,JP --gateway b=HK,GB. The routes will be stored in routes.v4.json and routes.v6.json, which contain IPv4 and IPv6 routes respectively. The format of these files is like:

[
    ...
    {
        "prefix": "1.2.0.0",
        "mask": "255.255.0.0",
        "length": 16,
        "gateway": "a"
    },
    ...
]

Where <prefix>/<length> forms an CIDR of a net block, and mask is the network mask of that block.

Specify --output-v4 <file> or --output-v6 <file> to change the default output file name.

Specify --no-v4 if you don't want IPv4 routes, or --no-v6 if you don't want IPv6 routes.

Specify --cache-file <file> to change the default cache file name, or --no-cache to not use a cache file.

Specify --update to force update the cache or --no-update to force use the cache.

By default, lessroutes generates routes for 0.0.0.0/0 or ::/0 if needed, you can specify --no-default-gateway to not generate them.

License

MIT