--- title: Podcast: Ironing Out the BGP Ruffles « ipSpace.net blog description: Ivan Pepelnjak joins Corey Quinn on the Screaming in the Cloud podcast to discuss the October 2021 Facebook outage, clarifying that the root cause was neither... canonical: https://daily.dev/posts/podcast-ironing-out-the-bgp-ruffles-ipspace-net-blog-9xme02ssk twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Podcast: Ironing Out the BGP Ruffles « ipSpace.net blog | daily.dev og:description: Ivan Pepelnjak joins Corey Quinn on the Screaming in the Cloud podcast to discuss the October 2021 Facebook outage, clarifying that the root cause was neither... og:url: https://daily.dev/posts/podcast-ironing-out-the-bgp-ruffles-ipspace-net-blog-9xme02ssk og:image: https://api.daily.dev/og/posts/9XMe02SSk.png og:image:alt: Podcast: Ironing Out the BGP Ruffles « 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. # Podcast: Ironing Out the BGP Ruffles « ipSpace.net blog **[ipSpace.net Blog](https://daily.dev/sources/ipspace)** · 1 min read · 0 upvotes · 0 comments ## Summary Ivan Pepelnjak joins Corey Quinn on the Screaming in the Cloud podcast to discuss the October 2021 Facebook outage, clarifying that the root cause was neither DNS nor BGP as widely reported. The conversation also covers networking history including VAX/VMS, early CCIE lab exams, BGP origins, the myth of only 13 DNS root name servers, and the evolution of networking from specialized craft to commodity. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What actually caused the October 2021 Facebook outage if it wasn't BGP or DNS? The October 2021 Facebook outage was not caused by BGP or DNS failures, despite widespread reporting suggesting otherwise. The BGP and DNS disruptions were symptoms rather than the root cause. Facebook's own engineering post-mortem confirmed the underlying issue originated in their internal network configuration changes, which cascaded into the visible BGP route withdrawals and DNS unavailability. _Engineers tracking major infrastructure incidents and their real root causes follow breakdowns like this on daily.dev._ ## Similar posts on daily.dev - [Cloudflare outage on February 20, 2026](https://daily.dev/posts/cloudflare-outage-on-february-20-2026-hy3fnhbxd) · Cloudflare · 5 upvotes · 0 comments - [It’s Always DNS: Lessons from the AWS Outage](https://daily.dev/posts/it-s-always-dns-lessons-from-the-aws-outage-bclzragig) · Security Boulevard · 0 upvotes · 0 comments - [BGP-Free Core with SR-MPLS « ipSpace.net blog](https://daily.dev/posts/bgp-free-core-with-sr-mpls-ipspace-net-blog-h7kronzy3) · ipSpace.net Blog · 0 upvotes · 0 comments --- Tags: [#networking](https://daily.dev/tags/networking), [#facebook](https://daily.dev/tags/facebook), [#dns](https://daily.dev/tags/dns), [#bgp](https://daily.dev/tags/bgp) [View this post on daily.dev](https://daily.dev/posts/podcast-ironing-out-the-bgp-ruffles-ipspace-net-blog-9xme02ssk) ```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":"Podcast: Ironing Out the BGP Ruffles « ipSpace.net blog","url":"https://daily.dev/posts/podcast-ironing-out-the-bgp-ruffles-ipspace-net-blog-9xme02ssk","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/podcast-ironing-out-the-bgp-ruffles-ipspace-net-blog-9xme02ssk"},"datePublished":"2026-08-11T08:54:16.056Z","dateModified":"2026-08-11T09:07:12.267Z","description":"Ivan Pepelnjak joins Corey Quinn on the Screaming in the Cloud podcast to discuss the October 2021 Facebook outage, clarifying that the root cause was neither...","image":"https://media.daily.dev/image/upload/s--CxzD6vbw--/f_auto/v1722860399/public/Placeholder%2005","thumbnailUrl":"https://media.daily.dev/image/upload/s--CxzD6vbw--/f_auto/v1722860399/public/Placeholder%2005","isAccessibleForFree":true,"articleSection":"ipSpace.net Blog","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"ipSpace.net Blog","logo":"https://media.daily.dev/image/upload/s--xS7E82MT--/f_auto,q_auto/v1786438303/logos/ipspace?_a=BAMAMicg0","url":"https://daily.dev/sources/ipspace"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/podcast-ironing-out-the-bgp-ruffles-ipspace-net-blog-9xme02ssk","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"networking,facebook,dns,bgp","timeRequired":"PT1M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"ipSpace.net Blog","item":"https://daily.dev/sources/ipspace"},{"@type":"ListItem","position":3,"name":"Podcast: Ironing Out the BGP Ruffles « ipSpace.net blog"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/podcast-ironing-out-the-bgp-ruffles-ipspace-net-blog-9xme02ssk#faq","mainEntity":[{"@type":"Question","name":"What actually caused the October 2021 Facebook outage if it wasn't BGP or DNS?","acceptedAnswer":{"@type":"Answer","text":"The October 2021 Facebook outage was not caused by BGP or DNS failures, despite widespread reporting suggesting otherwise. The BGP and DNS disruptions were symptoms rather than the root cause. Facebook's own engineering post-mortem confirmed the underlying issue originated in their internal network configuration changes, which cascaded into the visible BGP route withdrawals and DNS unavailability. Engineers tracking major infrastructure incidents and their real root causes follow breakdowns like this on daily.dev."}}]} ```