--- title: Updates: AWS Networking « ipSpace.net blog | daily.dev description: A webinar update covering AWS networking features added after re:Invent, including IPv6 support across VPC subnets and EC2 instances, multiple IPv6 CIDR blocks... canonical: https://daily.dev/posts/updates-aws-networking-ipspace-net-blog-ukd5zsmvc twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Updates: AWS Networking « ipSpace.net blog | daily.dev og:description: A webinar update covering AWS networking features added after re:Invent, including IPv6 support across VPC subnets and EC2 instances, multiple IPv6 CIDR blocks... og:url: https://daily.dev/posts/updates-aws-networking-ipspace-net-blog-ukd5zsmvc og:image: https://api.daily.dev/og/posts/uKD5zsMVc.png og:image:alt: Updates: AWS Networking « 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. # Updates: AWS Networking « ipSpace.net blog **[ipSpace.net Blog](https://daily.dev/sources/ipspace)** · 1 min read · 0 upvotes · 0 comments ## Summary A webinar update covering AWS networking features added after re:Invent, including IPv6 support across VPC subnets and EC2 instances, multiple IPv6 CIDR blocks per VPC, Elastic Network Adapter (ENA) Express and SRD, NAT64/DNS64 support, intra-region Transit Gateway peering, and ALB/NLB improvements like minimum healthy targets and zonal target groups. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is NAT64 and DNS64 support in AWS and how does it work with NAT Gateway and Route 53? AWS NAT Gateway supports NAT64, which translates IPv6 packets from IPv6-only clients to IPv4 destinations, while Route 53 supports DNS64, which synthesizes AAAA records from A records so IPv6-only instances can reach IPv4-only services. Together they allow IPv6-only VPC subnets and EC2 instances to communicate with IPv4 endpoints without dual-stack configuration. _Engineers migrating VPCs to IPv6-only architectures track AWS networking changes like these on daily.dev._ ### What is AWS ENA Express and SRD and what does it do for EC2 networking? ENA Express uses Scalable Reliable Datagram (SRD), a transport protocol developed by AWS, to improve network performance between EC2 instances. It reduces tail latency and increases throughput compared to standard TCP by spreading traffic across multiple paths and handling packet reordering at the receiver, making it beneficial for latency-sensitive distributed applications. _Teams optimizing EC2 network performance for distributed workloads find relevant AWS updates on daily.dev._ ## Similar posts on daily.dev - [Amazon RDS now supports IPv6 for VPC endpoints of RDS Service APIs](https://daily.dev/posts/amazon-rds-now-supports-ipv6-for-vpc-endpoints-of-rds-service-apis-b0g5jfy62) · AWS · 0 upvotes · 0 comments - [The biggest pre:invent serverless announcements you may have missed](https://daily.dev/posts/the-biggest-pre-invent-serverless-announcements-you-may-have-missed-ljnykfjqv) · theburningmonk.com · 0 upvotes · 0 comments - [Azure Networking Updates: Secure, Scalable, and AI-Optimized](https://daily.dev/posts/azure-networking-updates-secure-scalable-and-ai-optimized-rwdmbkfkd) · Microsoft Azure · 1 upvotes · 0 comments - [Amazon WorkSpaces now supports IPv6](https://daily.dev/posts/amazon-workspaces-now-supports-ipv6-uuo6stdeh) · AWS · 0 upvotes · 0 comments - [Jan Recap: New AWS Privileged Permissions and Services](https://daily.dev/posts/jan-recap-new-aws-privileged-permissions-and-services-bqevxskkf) · Security Boulevard · 0 upvotes · 0 comments --- Tags: [#aws](https://daily.dev/tags/aws) [View this post on daily.dev](https://daily.dev/posts/updates-aws-networking-ipspace-net-blog-ukd5zsmvc) ```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":"Updates: AWS Networking « ipSpace.net blog","url":"https://daily.dev/posts/updates-aws-networking-ipspace-net-blog-ukd5zsmvc","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/updates-aws-networking-ipspace-net-blog-ukd5zsmvc"},"datePublished":"2026-08-11T08:53:23.612Z","dateModified":"2026-08-11T09:09:10.702Z","description":"A webinar update covering AWS networking features added after re:Invent, including IPv6 support across VPC subnets and EC2 instances, multiple IPv6 CIDR blocks...","image":"https://media.daily.dev/image/upload/s--58gMhC4P--/f_auto/v1722860399/public/Placeholder%2012","thumbnailUrl":"https://media.daily.dev/image/upload/s--58gMhC4P--/f_auto/v1722860399/public/Placeholder%2012","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/updates-aws-networking-ipspace-net-blog-ukd5zsmvc","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"aws","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":"Updates: AWS Networking « ipSpace.net blog"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/updates-aws-networking-ipspace-net-blog-ukd5zsmvc#faq","mainEntity":[{"@type":"Question","name":"What is NAT64 and DNS64 support in AWS and how does it work with NAT Gateway and Route 53?","acceptedAnswer":{"@type":"Answer","text":"AWS NAT Gateway supports NAT64, which translates IPv6 packets from IPv6-only clients to IPv4 destinations, while Route 53 supports DNS64, which synthesizes AAAA records from A records so IPv6-only instances can reach IPv4-only services. 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