Help with IPv6 for a total knoob!

[CancunManny]

Hello, I know pretty much NOTHING about IPv6  I now have to learn enough to get IPv6 going since I want to implement matter via tasmota firmware on some microprocessors (ESP32s) and after a quick read it seems it depends on IPv6.

First general questions I have.  If my ISP doesn't provide IPv6 can I still use IPv6 in my local network, or in order to us IPv6 on local network I need an IPv6 connection to the internet?

I tried to read some other forums, but the answers they give might as well be in chinese to me!  For example

First things first: you need to check with your ISP that they are fully dual stack, and the block that's being allocated to your WAN interface is properly routed etc.. It's also a good opportunity to ask them whether it's dynamic or static, and whether /64 is the only block size they'll allocate [1].

Assuming the range is genuine and available for your use, the starting point is to make it available on your LAN interface. Edit your LAN interface and under 'IPv6' select 'track interface' and select the WAN interface you're getting the v6 range from.

It does seem my ISP provides IPv6



I use Ubuntu, when I go to my wired settings configuration, I do see an IPv6 address, but when I go to OPNsense IPv6 leases I see nothing listed.  Where is my computer getting the IPv6 address from?

Can someone point me to a step by step guide on how to get IPv6 going with OPNsense without having to know exactly what is going on?

[CancunManny]

So my computer connected via wire to OPNsense gives me a fe80::53af:6156: address

I have no idea where that is coming from, since OPNsense and my ISP router don't seem to list anything like that.

My ISP router/modem has LAN info and WAN info.  If I am understanding correctly I want to look at the LAN info of my ISP router to set up my WAN section in OPNsense correct?

[RamSense]

Hi CancunManny,

This guide will help you with ipv6 and opnsense: https://homenetworkguy.com/how-to/configure-ipv6-opnsense-with-isp-such-as-comcast-xfinity/

the fe80:: addresses are completely normal if you allow ipv6 on the network. Only hosts on the local network can access fe80:: ipv6 addresses and is generated by the device capable of ipv6.