https://nixpoin.com/tags/immortalwrt/Recent content in Immortalwrt on Nixpoin.comHugoen-usSun, 08 Mar 2026 00:00:00 +0000https://nixpoin.com/openwrt/ipv6-nat66-ula-openwrt-en/Sun, 08 Mar 2026 00:00:00 +0000https://nixpoin.com/openwrt/ipv6-nat66-ula-openwrt-en/<h2 id="the-problem">The Problem</h2> <p>My Google TV were experiencing random IPv6 disconnections but normal when not using IPv6.</p> <p>My initial setup used <strong>NDP Proxy</strong> to share addresses from the WAN <code>/64</code> prefix with LAN devices. It worked, but was inherently unstable because devices like Google TV aggressively send Router Solicitations, making them more susceptible to connectivity drops during prefix changes</p> <p>The more reliable solution is <strong>NAT66 + ULA</strong> — LAN devices use a stable ULA (Unique Local Address) prefix that never changes, while the router masquerades traffic to the dynamic WAN IPv6 address.</p>