Firstly, apologies if this is in the wrong section however I think this is the most appropriate. I am conducting some academic research regarding a comparison of IPv6 stacks in various operating systems handling certain data. For this I need to write up background research before the experiment takes place. My question is, like in the title, what is the best source for the documentation? With it being academic I need the most original, official and reliable information to base any claims on so wikipedia really can't cut it unfortunately. Any history or milestones would be great and also anything to do with IPv6 headers, it's extension headers and ICMPv6 (mainly error handling). Further apologies if I've missed anything glaringly obvious in my previous search endeavours. Thanks for reading. P.S. I should probably add that the comparison will be entirely neutral in results so it won't look bad for any operating systems involved.