Devtools started link is invalid when server host is set to IPv6 address #202
Description
Describe the bug
Setting server host to a IPv6 address (ex: localhost) lead to a broken link when launching devtools:
import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
export default defineConfig({
plugins: [react()],
server: {
host: '::1',
},
devtools: {
enabled: true,
}
})pnpm run dev (proper IPv6 URL):
VITE v8.0.0 ready in 79 ms
➜ Local: http://[::1]:5173/
➜ press h + enter to show help
pnpm run build:
vite v8.0.0 building client environment for production...
✓ 20 modules transformed.
computing gzip size...
dist/index.html 0.46 kB │ gzip: 0.30 kB
dist/assets/react-CHdo91hT.svg 4.12 kB │ gzip: 2.06 kB
dist/assets/vite-BF8QNONU.svg 8.70 kB │ gzip: 1.60 kB
dist/assets/hero-5sT3BiRD.png 44.91 kB
dist/assets/index-D64VDMd1.css 4.10 kB │ gzip: 1.47 kB
dist/assets/index-Bc2oaLMj.js 193.32 kB │ gzip: 60.66 kB
✓ built in 159ms
[Vite DevTools] Client authentication is disabled. Any browser can connect to the devtools and access to your server and filesystem.
⬢ Vite DevTools started at http://::1:9999
The displayed http://::1:9999 isn't a valid IPv6 URL, devtools can be properly accessed at http://[::1]:9999 as expected.
Reproduction
System Info
System:
OS: Linux 6.19 Fedora Linux 43 (Workstation Edition)
CPU: (32) x64 AMD Ryzen 9 9950X3D 16-Core Processor
Memory: 45.29 GB / 62.33 GB
Container: Yes
Shell: 5.9 - /usr/bin/zsh
Binaries:
Node: 24.11.0 - /home/afcm/.nvm/versions/node/v24.11.0/bin/node
Yarn: 1.22.22 - /home/afcm/.nvm/versions/node/v24.11.0/bin/yarn
npm: 11.11.1 - /home/afcm/.nvm/versions/node/v24.11.0/bin/npm
pnpm: 10.32.1 - /home/afcm/.nvm/versions/node/v24.11.0/bin/pnpm
bun: 1.3.10 - /home/afcm/.bun/bin/bun
Deno: 2.7.5 - /home/afcm/.deno/bin/deno
Browsers:
Brave Browser: 146.1.88.130
Chrome: 146.0.7680.75
Firefox: 148.0.2
Firefox Developer Edition: 148.0.2Used Package Manager
pnpm
Validations
- Follow our Code of Conduct
- Read the Contributing Guide.
- Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
- Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
- The provided reproduction is a minimal reproducible of the bug.