I am going to keep this short and sweet. The simplest way to calculate the link local address used for ipv6 is to use the EUI-64. This is basically simply derived from your mac address. So the simple way to calculate it.

So the key is to remember there is a bit flip that happens on the last hex byte of the mac address on bit 7 to be exact. It changes from a 1 to a 0 or a 0 to a 1 there is a simple way to remember and do the conversion too. It is below

That is it for the above example you can see the original c was converted to an e. That is it that is all required to do the conversion. Good to know how this process works and you can use it as part of the prefix ipv6 addressing as well.

This is the article that inspired me to write this article.