--- title: Goodbye, Ubuntu 20.04 (netlab 26.05) « ipSpace.net blog description: netlab release 26.05 drops support for Python 3.8 (EOL since October 2024), meaning it no longer works on vanilla Ubuntu 20.04. The trigger was containerlab... canonical: https://daily.dev/posts/goodbye-ubuntu-20-04-netlab-26-05-ipspace-net-blog-woulqw3qm twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Goodbye, Ubuntu 20.04 (netlab 26.05) « ipSpace.net blog | daily.dev og:description: netlab release 26.05 drops support for Python 3.8 (EOL since October 2024), meaning it no longer works on vanilla Ubuntu 20.04. The trigger was containerlab... og:url: https://daily.dev/posts/goodbye-ubuntu-20-04-netlab-26-05-ipspace-net-blog-woulqw3qm og:image: https://api.daily.dev/og/posts/WOuLQW3qm.png og:image:alt: Goodbye, Ubuntu 20.04 (netlab 26.05) « 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. # Goodbye, Ubuntu 20.04 (netlab 26.05) « ipSpace.net blog **[ipSpace.net Blog](https://daily.dev/sources/ipspace)** · 2 min read · 0 upvotes · 0 comments ## Summary netlab release 26.05 drops support for Python 3.8 (EOL since October 2024), meaning it no longer works on vanilla Ubuntu 20.04. The trigger was containerlab 0.75.0 breaking on older container software. The networklab package now requires Python 3.10 or above. Users who want to stay on Ubuntu 20.04 can manually install Python 3.10 and disable the containerlab version check. Upgrading to Ubuntu 24.04 is possible but some quirks are still being ironed out, and Ubuntu 26.04 testing has begun with early issues found in the qemu-kvm package definition. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What Python version does netlab 26.05 require? netlab 26.05 (the networklab package) requires Python 3.10 or above. Python 3.8 reached end-of-life in October 2024, and Ubuntu 20.04 — which shipped with Python 3.8 — is no longer supported out of the box. Users can still run netlab on Ubuntu 20.04 by manually installing Python 3.10 and disabling the containerlab version check with `netlab defaults 'providers.clab.probe=[]'`. _Network engineers migrating netlab environments track breaking changes like this on daily.dev._ ### How do I disable the containerlab version check in netlab? Run `netlab defaults 'providers.clab.probe=[]'` to disable the containerlab version check. This is useful when running older containerlab releases on Ubuntu 20.04 that are incompatible with the version probe introduced alongside netlab 26.05, at least until the upstream containerlab issue is resolved. _Keeping lab tooling working across OS upgrades is easier when you follow netlab releases on daily.dev._ ## Similar posts on daily.dev - [netlab 26.09: Syslog, More DNS, Netmiko « ipSpace.net blog](https://daily.dev/posts/netlab-26-09-syslog-more-dns-netmiko-ipspace-net-blog-7hzbp4smq) · ipSpace.net Blog · 0 upvotes · 0 comments - [Ubuntu 25.10 support ends on 9 July 2026](https://daily.dev/posts/ubuntu-25-10-support-ends-on-9-july-2026-hherr5kmb) · omg\! ubuntu\! · 3 upvotes · 0 comments - [Ubuntu 26.04 will block your upgrade on Thursday if your containers still use cgroup v1](https://daily.dev/posts/ubuntu-26-04-will-block-your-upgrade-on-thursday-if-your-containers-still-use-cgroup-v1-lyhw48pbi) · XDA Developers · 1 upvotes · 0 comments - [libvirt provider « ipSpace.net blog](https://daily.dev/posts/libvirt-provider-ipspace-net-blog-jtcrzcqxc) · ipSpace.net Blog · 1 upvotes · 0 comments - [Ubuntu 16.04 LTS has reached the end of standard Expanded Security Maintenance with Ubuntu Pro. Here are your options.](https://daily.dev/posts/ubuntu-16-04-lts-has-reached-the-end-of-standard-expanded-security-maintenance-with-ubuntu-pro-here-iywa0piiv) · Ubuntu · 0 upvotes · 0 comments --- Tags: [#python](https://daily.dev/tags/python), [#networking](https://daily.dev/tags/networking), [#ubuntu](https://daily.dev/tags/ubuntu) [View this post on daily.dev](https://daily.dev/posts/goodbye-ubuntu-20-04-netlab-26-05-ipspace-net-blog-woulqw3qm) ```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":"Goodbye, Ubuntu 20.04 (netlab 26.05) « ipSpace.net blog","url":"https://daily.dev/posts/goodbye-ubuntu-20-04-netlab-26-05-ipspace-net-blog-woulqw3qm","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/goodbye-ubuntu-20-04-netlab-26-05-ipspace-net-blog-woulqw3qm"},"datePublished":"2026-08-11T08:54:29.476Z","dateModified":"2026-08-24T06:57:27.504Z","description":"netlab release 26.05 drops support for Python 3.8 (EOL since October 2024), meaning it no longer works on vanilla Ubuntu 20.04. 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