From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Thu, 21 Jul 2011 13:01:13 +0000 (+0100)
Subject: WIP, NOTES
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=c4c8208c3c97e69b5db616b45e69f6f11f24d122;p=secnet.git

WIP, NOTES
---

diff --git a/NOTES.ip-over-dns b/NOTES.ip-over-dns
new file mode 100644
index 0000000..c706b55
--- /dev/null
+++ b/NOTES.ip-over-dns
@@ -0,0 +1,12 @@
+The IP-over-DNS protocol is as follows:
+
+Encoding:
+  We don't want to go outside alphanumerics and hyphens,
+  ie hostname-legal.  So we do base32 encoding:
+  8 hostname characters encoding 5 bits each, which encodes
+  5 bytes of input data.
+
+* Packets "up":
+  - client splits packet into appropriate fragments
+  - makes A queries for
+