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 # book6: A Collaborative IPv6 Book.
 <img src="./book6logo.png" alt="book6 logo" width="200px" height="auto"/>
+
 This is the current list of contents. It will change as the book evolves.
 There is also an [index](https://github.com/becarpenter/book6/blob/main/Index.md),
 and a [citation index](https://github.com/becarpenter/book6/blob/main/Citex.md).