Working on nat64 tutorial

ewpratten · Aug 5, 2023 · 32f1447 · 32f1447
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diff --git a/docs/book/SUMMARY.md b/docs/book/SUMMARY.md
@@ -1,7 +1,8 @@
 # Summary
 
-- [Introduction](./introduction.md)
-- [Libraries](./libraries.md)
+# Getting Started
+
+- [What is NAT64?](./learning/nat64.md)
 
 # User Guides
 

diff --git a/docs/book/binaries/protomask.md b/docs/book/binaries/protomask.md
@@ -1 +1,3 @@
 # `protomask` User Guide
+
+The `protomask` binary is a NAT64 implementation. 
diff --git a/docs/book/introduction.md b/docs/book/introduction.md
diff --git a/docs/book/learning/nat64.md b/docs/book/learning/nat64.md
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+# What is NAT64?
+
+IPv4 and IPv6 are two different versions of the Internet Protocol that, while being similar in many ways, are not directly compatible (largely due to their differing header structure).
+
+
+## Addressing
+
+IPv4 addresses are 32-bit numbers (represented as `xxx.xxx.xxx.xxx`), while IPv6 addresses are 128-bit numbers (represented as `xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx`).
+
+When an IPv4 packet is sent from one host to another, the sender embeds both the sending and receiving address into the packet header (just like a destination and return address on physical mail). This means that a packet traveling from `192.0.2.1` to `192.0.2.2` would be marked as such in the packet header:
+
diff --git a/docs/book/libraries.md b/docs/book/libraries.md