--- title: Testing FRRouting Pull Requests with netlab «... description: A step-by-step guide for testing FRRouting pull requests using netlab. The workflow covers cloning the FRRouting GitHub repo, checking out a specific PR branch... canonical: https://daily.dev/posts/testing-frrouting-pull-requests-with-netlab-ipspace-net-blog-erecpefyl twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Testing FRRouting Pull Requests with netlab « ipSpace.net blog | daily.dev og:description: A step-by-step guide for testing FRRouting pull requests using netlab. The workflow covers cloning the FRRouting GitHub repo, checking out a specific PR branch... og:url: https://daily.dev/posts/testing-frrouting-pull-requests-with-netlab-ipspace-net-blog-erecpefyl og:image: https://api.daily.dev/og/posts/eRECpeFYL.png og:image:alt: Testing FRRouting Pull Requests with netlab « ipSpace.net blog og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Testing FRRouting Pull Requests with netlab « ipSpace.net blog **[ipSpace.net Blog](https://daily.dev/sources/ipspace)** · 2 min read · 0 upvotes · 0 comments ## Summary A step-by-step guide for testing FRRouting pull requests using netlab. The workflow covers cloning the FRRouting GitHub repo, checking out a specific PR branch with GitHub CLI, building a custom FRRouting Docker container from source using the included Alpine build script, configuring netlab to use that custom container image (via defaults or environment variable), starting the lab with a bug-reproducing topology, and cleaning up afterward. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How do I test a specific FRRouting pull request using netlab before it's merged? Clone the FRRouting repo, check out the PR branch with `gh pr checkout `, build a custom container with `./docker/alpine/build.sh`, then point netlab at the resulting image using `netlab defaults devices.frr.clab.image=frr:alpine-` or the equivalent environment variable `NETLAB_DEVICES_FRR_CLAB_IMAGE`. Start your lab normally and verify the correct image is running with `netlab report devices`. _Network engineers validating FRRouting fixes before upstream merge track workflows like this on daily.dev._ --- Tags: [#docker](https://daily.dev/tags/docker), [#networking](https://daily.dev/tags/networking) [View this post on daily.dev](https://daily.dev/posts/testing-frrouting-pull-requests-with-netlab-ipspace-net-blog-erecpefyl) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Testing FRRouting Pull Requests with netlab « ipSpace.net blog","url":"https://daily.dev/posts/testing-frrouting-pull-requests-with-netlab-ipspace-net-blog-erecpefyl","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/testing-frrouting-pull-requests-with-netlab-ipspace-net-blog-erecpefyl"},"datePublished":"2026-08-11T08:54:31.697Z","dateModified":"2026-08-11T09:12:24.530Z","description":"A step-by-step guide for testing FRRouting pull requests using netlab. 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Start your lab normally and verify the correct image is running with `netlab report devices`. Network engineers validating FRRouting fixes before upstream merge track workflows like this on daily.dev."}}]} ```