I'm running a stack with Next.js, MongoDB Atlas, Cloudflare Images, and AWS Amplify. On my home internet connection, iPhones and iPads can't open cloudflare.com or any imagedelivery.net URL;…
My Windows laptop has a very specific connectivity problem: IPv4 stops working when I connect to my condominium's Wi-Fi, while IPv6 continues to work. The same laptop has…
I have a MacBook Air with Bitdefender installed, including its VPN component, although I do not actively connect to the VPN. When I start the computer, Bitdefender sometimes…
I'm using a MacBook with Bitdefender installed. When I turned the laptop on, I noticed that the IP address shown in Bitdefender was different from the one I…
Several users recently started receiving this Windows VPN error when connecting to a Meraki L2TP VPN: "The L2TP connection attempt failed because the security layer encountered a processing…
For the past day or two, every device on my home network has shown limited or no internet access. Google Search, Gmail, YouTube, Wikipedia, and a few other…
I've seen recommendations to disable IPv6 on Windows network adapters as a way to prevent IPv6-based DNS poisoning or hijacking. If IPv6 isn't actively used in the environment,…
I'm running an IPv6-only Kubernetes cluster on-premises with globally routable addresses, BGP available, and Cilium as the CNI. Because of a temporary networking limitation in my KVM/OVN setup,…
I'm seeking advice on working with IPv6, especially in relation to AWS. What does implementing a dual-stack configuration look like? Where should I begin, and what steps should…
I'm facing repeated intrusion attempts from a specific IPv6 address range that seems to target certain devices on my network. The attacks come from the address range 2600:1900:4020:49c:0:xxx,…
I've been experiencing frequent intrusion attempts from a specific IPv6 address range that targets certain devices on my network. These attempts seem to originate from the range 2600:1900:4020:49c:0:xxx,…
I'm looking to refresh my networking knowledge since it's been a while since I really focused on anything beyond basic commands like ping and tracert. I want to…
I'm working on a network where previous management made quite a few changes regarding IPv6 back in 2016. I have six domain controllers, each with different configurations, and…
I'm working on deploying services using Google Cloud Platform (GCP) and Vercel but I've noticed that implementing IPv6 can be quite pricey. GCP only supports IPv6 in the…
I'm experiencing issues with outbound emails and meeting invites from my organization being rejected by the receiving side because of SPF misalignment. The emails are being sent from…
I'm having an odd issue with nslookup on my Windows Server setup. When I run a query with a fully qualified domain name (FQDN), like "nslookup hostname.FQDN", I…
I'm having some trouble with a dedicated Linux mail server at work that sends automated messages. We're running into warnings in the logs regarding SPF and DKIM. Here's…
I have a Calix GS4220E router, and I'm trying to figure out the best DHCPv6 mode for my LAN settings. My options are stateful, stateless, or both. Can…
I've got a Surface Go 3 with Windows 11, and I'm using an LTE connection via an eSIM with O2 in Germany. Everything seems fine, but I'm only…
Hey everyone! I'm having trouble changing my DNS settings on Windows 11 to support HTTPS. I've managed to set it up for IPv4, but I'm stuck on IPv6.…