Add glossary.

en/glossary.tex

@@ -1,4 +1,31 @@
 \chapter*{Glossary}\label{ch:glossary}
 \addcontentsline{toc}{chapter}{Glossary}
 
-\XXX{TODO}
+% This is hard to format reasonably, so we at least try to do it consistently.
+
+\strut\indent{}A \emph{bridge} is a networking device, which forwards link-level
+frames between interfaces.
+
+The term \emph{community wireless network}
+describes a system of often wireless networks, which is managed by a community
+rather than by an ISP.
+
+\emph{Dual-stack} networks can forward and process both IPv4 and IPv6 packets.
+
+When a program is run without being able to display graphical elements, it is said to be run \emph{headless}.
+
+A \emph{homelab} is a small infrastructure, on which a network enthusiast can experiment and thus improve their networking skills.
+
+\emph{Netsplit} is just a short form for \uv{network split}.
+
+A \emph{next hop} is the name for the following router a packet is forwarded to.
+
+In Linux distributions, a \emph{package} is a common way to distribute software.
+
+\emph{Quad-dotted notation} denotes writing a
+32-bit number as four decimal numbers representing individual bytes, with dots
+between them. The numbers are written in the network order, also known as big-endian.
+
+A \emph{routing daemon} is a program running on a router that exchanges routing information with other routers.
+
+Python's current way of distributing compiled software is called \emph{wheel}.