--- title: XE Hates Redistributed Static IPv6 Routes « ipSpace.net blog description: Cisco IOS/XE exhibits a peculiar bug where redistributed IPv6 static routes into BGP are delayed by approximately one minute, while IPv4 static routes and... canonical: https://daily.dev/posts/xe-hates-redistributed-static-ipv6-routes-ipspace-net-blog-fekbclfwa twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: XE Hates Redistributed Static IPv6 Routes « ipSpace.net blog | daily.dev og:description: Cisco IOS/XE exhibits a peculiar bug where redistributed IPv6 static routes into BGP are delayed by approximately one minute, while IPv4 static routes and... og:url: https://daily.dev/posts/xe-hates-redistributed-static-ipv6-routes-ipspace-net-blog-fekbclfwa og:image: https://api.daily.dev/og/posts/fEKbcLfwA.png og:image:alt: XE Hates Redistributed Static IPv6 Routes « 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. # XE Hates Redistributed Static IPv6 Routes « ipSpace.net blog **[ipSpace.net Blog](https://daily.dev/sources/ipspace)** · 7 min read · 0 upvotes · 0 comments ## Summary Cisco IOS/XE exhibits a peculiar bug where redistributed IPv6 static routes into BGP are delayed by approximately one minute, while IPv4 static routes and OSPFv3 routes are redistributed almost instantly. Detailed debug logs (debug bgp all updates, debug bgp all import events) show the IPv6 static route sits in the RIB but BGP ignores it until a BGP nexthop scan completes around the 60-second mark. The behavior appears tied to the 'IMP Initial export complete' event in the BGP IPv6 address family, suggesting the initial BGP table export for IPv6 unicast delays static route processing in a way that OSPF-learned routes are not affected. The root cause remains unexplained and is likely a Cisco bug. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Why does Cisco IOS/XE take about 60 seconds to redistribute an IPv6 static route into BGP while IPv4 static routes and OSPFv3 routes are redistributed immediately? On Cisco IOS/XE, redistributed IPv6 static routes into BGP are delayed until the BGP IPv6 unicast address family completes its initial export scan ('IMP Initial export complete'), which takes roughly 60 seconds. IPv4 static routes use event-driven next-hop tracking and are redistributed within seconds of the BGP session coming up. OSPFv3 routes are also redistributed immediately. The delay appears to be a Cisco bug specific to static routes in the IPv6 BGP address family. _Network engineers debugging BGP redistribution timing issues on Cisco gear track findings like this on daily.dev._ ### What debug commands show BGP redistribution events for IPv6 on Cisco IOS/XE? To trace IPv6 BGP redistribution on Cisco IOS/XE, use 'debug bgp all updates', 'debug bgp all import events', and 'debug bgp all events' together with 'debug ipv6 routing'. The combination reveals when routes enter the RIB, when BGP receives redistribution events, and when BGP actually sources and advertises the route — exposing gaps between RIB insertion and BGP processing. _Cisco IOS/XE BGP debugging techniques like these surface regularly for network engineers on daily.dev._ ## Similar posts on daily.dev - [BGP-Free Network Core with SRv6 « ipSpace.net blog](https://daily.dev/posts/bgp-free-network-core-with-srv6-ipspace-net-blog-9bbn88wub) · ipSpace.net Blog · 0 upvotes · 0 comments - [The Never-Ending IPv6 Loopback Prefix Saga « ipSpace.net blog](https://daily.dev/posts/the-never-ending-ipv6-loopback-prefix-saga-ipspace-net-blog-4nlhgh10l) · ipSpace.net Blog · 0 upvotes · 0 comments - [Exploring the BGP Neighbor CONNECT State « ipSpace.net blog](https://daily.dev/posts/exploring-the-bgp-neighbor-connect-state-ipspace-net-blog-q28k0i62x) · ipSpace.net Blog · 0 upvotes · 0 comments --- Tags: [#bgp](https://daily.dev/tags/bgp) [View this post on daily.dev](https://daily.dev/posts/xe-hates-redistributed-static-ipv6-routes-ipspace-net-blog-fekbclfwa) ```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":"XE Hates Redistributed Static IPv6 Routes « ipSpace.net blog","url":"https://daily.dev/posts/xe-hates-redistributed-static-ipv6-routes-ipspace-net-blog-fekbclfwa","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/xe-hates-redistributed-static-ipv6-routes-ipspace-net-blog-fekbclfwa"},"datePublished":"2026-08-11T08:52:48.816Z","dateModified":"2026-08-24T07:03:07.652Z","description":"Cisco IOS/XE exhibits a peculiar bug where redistributed IPv6 static routes into BGP are delayed by approximately one minute, while IPv4 static routes and...","image":"https://media.daily.dev/image/upload/s--P4t4XyoV--/f_auto/v1722860399/public/Placeholder%2001","thumbnailUrl":"https://media.daily.dev/image/upload/s--P4t4XyoV--/f_auto/v1722860399/public/Placeholder%2001","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/xe-hates-redistributed-static-ipv6-routes-ipspace-net-blog-fekbclfwa","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"bgp","timeRequired":"PT7M"} {"@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":"XE Hates Redistributed Static IPv6 Routes « ipSpace.net blog"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/xe-hates-redistributed-static-ipv6-routes-ipspace-net-blog-fekbclfwa#faq","mainEntity":[{"@type":"Question","name":"Why does Cisco IOS/XE take about 60 seconds to redistribute an IPv6 static route into BGP while IPv4 static routes and OSPFv3 routes are redistributed immediately?","acceptedAnswer":{"@type":"Answer","text":"On Cisco IOS/XE, redistributed IPv6 static routes into BGP are delayed until the BGP IPv6 unicast address family completes its initial export scan ('IMP Initial export complete'), which takes roughly 60 seconds. IPv4 static routes use event-driven next-hop tracking and are redistributed within seconds of the BGP session coming up. OSPFv3 routes are also redistributed immediately. The delay appears to be a Cisco bug specific to static routes in the IPv6 BGP address family. Network engineers debugging BGP redistribution timing issues on Cisco gear track findings like this on daily.dev."}},{"@type":"Question","name":"What debug commands show BGP redistribution events for IPv6 on Cisco IOS/XE?","acceptedAnswer":{"@type":"Answer","text":"To trace IPv6 BGP redistribution on Cisco IOS/XE, use 'debug bgp all updates', 'debug bgp all import events', and 'debug bgp all events' together with 'debug ipv6 routing'. The combination reveals when routes enter the RIB, when BGP receives redistribution events, and when BGP actually sources and advertises the route — exposing gaps between RIB insertion and BGP processing. Cisco IOS/XE BGP debugging techniques like these surface regularly for network engineers on daily.dev."}}]} ```