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Filtered by: ipv6 Clear Filter

PureVPN IPv6 Leak

In late August 2025, I submitted two security reports to PureVPN under their VDP. Three weeks later, I’ve received no response, so I decided to publish the findings to inform other users. The issues affect both their GUI (v2.10.0) and CLI (v2.0.1) clients on Linux (tested on Ubuntu 24.04.3 LTS, kernel 6.8.0, iptables-nft backend). Here’s what I found. 1. IPv6 Leaks Off-Tunnel After toggling Wi-Fi or resuming from suspend, the PureVPN client fails to restore IPv6 protections: CLI (IKS enabled

IPv6 reaches majority use in 21 countries as Starlink and other providers modernize global connectivity

What just happened? The number of countries where more than half of internet connections use the IPv6 protocol has surged from 13 to 21 over the past year. This rapid progress, tracked by measurements from organizations such as Akamai, APNIC, Facebook, and Google, highlights both evolution and the growing influence of new connectivity providers, most notably Starlink. The most dramatic transformation has occurred in Tuvalu, a Pacific island nation with a population under 10,000. Until early 202

Using the Internet without IPv4 connectivity

Using the Internet without IPv4 connectivity A few days ago my ISP broke the IPv4 connectivity from my router after a power cut. Fortunately IPv6 connectivity still worked fine, but only a small fraction of websites were accessible. In this post I'll cover how Linux, WireGuard, and Hetzner came to the rescue - keeping the whole internet usable with only an IPv6 connection. Opinions expressed are solely my own and do not express the views or opinions of my employer. Background One morning I

Using the internet without IPv4 connectivity

Using the Internet without IPv4 connectivity A few days ago my ISP broke the IPv4 connectivity from my router after a power cut. Fortunately IPv6 connectivity still worked fine, but only a small fraction of websites were accessible. In this post I'll cover how Linux, WireGuard, and Hetzner came to the rescue - keeping the whole internet usable with only an IPv6 connection. Opinions expressed are solely my own and do not express the views or opinions of my employer. Background One morning I