From 6f951a62c9e37cb864da41864db8458f280fb092 Mon Sep 17 00:00:00 2001 From: Henry V Child Date: Sat, 12 Apr 2025 18:34:43 +0200 Subject: [PATCH] New post: Setting up Unique Local Addresses (ULA) on OPNsense --- .../index.md | 20 +++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 content/posts/2025/Setting up Unique Local Addresses (ULA) on OPNsense/index.md diff --git a/content/posts/2025/Setting up Unique Local Addresses (ULA) on OPNsense/index.md b/content/posts/2025/Setting up Unique Local Addresses (ULA) on OPNsense/index.md new file mode 100644 index 0000000..c027a0e --- /dev/null +++ b/content/posts/2025/Setting up Unique Local Addresses (ULA) on OPNsense/index.md @@ -0,0 +1,20 @@ +--- +date: 2025-04-12T21:18:30+01:00 +draft: false +title: Setting up Unique Local Addresses (ULA) on OPNsense +tags: + - Post + - IPv6 + - Networking +--- +Setting up unique local addresses on OPNsense is very easy however not very well documented. This is how to configure then + +Firstly create a unique local IPv6 prefix. This should be according to RFC4193. You can use this website (or similar websites) to generate the address. + +https://www.unique-local-ipv6.com/# + +Next, create a virtual IP on an interface with the desired IP for said interface. From the generator you will receive a /48 network, pick a subnet from this address range for your local network. + +For example I used the virtual IP `fd7a:18a6:838d::1/64` for my LAN interface. + +The router should be reachable using the address configured an should router advertisements be configured correctly then nodes on that network should generate a their own unique local address on that network!