X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=Networking.m4;h=f64b341100251d76559d04357ba9d79b046ca12e;hb=6db5ba9acf7487b4fad592445e74bdb516d7f9c7;hp=b469442dbe68704451ecf23aa4ebd35bdb6c8f77;hpb=e9a3585174e0fda1ac580d0e720f7ecc48bb9e9f;p=aple.git

diff --git a/Networking.m4 b/Networking.m4
index b469442..f64b341 100644
--- a/Networking.m4
+++ b/Networking.m4
@@ -156,15 +156,15 @@ section aim to get the reader started with both tools. </p>
 
 SUBSECTION(«Virtual Ethernet Interfaces»)
 
-<p> A bridge can accommodate physical devices like <code> eth0 </code>
-as well as virtual devices. On Linux systems the common approach
-to equip virtual machines with network interfaces employs the <em>
-virtual ethernet </em> (veth) device driver. This driver provides
-virtual pairs of devices where each pair represents an ethernet
-tunnel. Ethernet frames received by one end appear on its pair. To
-set up the network interface for a virtual machine, one end of the
-pair is added to a bridge on the host system while the other end
-represents the ethernet device of the virtual machine. </p>
+<p> A bridge can accommodate physical devices as well as virtual
+devices. On Linux systems the common approach to equip virtual machines
+with network interfaces employs the <em>virtual ethernet</em> device
+driver, veth. This driver provides virtual pairs of devices where
+each pair represents an ethernet tunnel. Ethernet frames received
+by one end appear on its peer. To set up the network interface for
+a virtual machine, one end of the pair is added to a bridge on the
+host system while the other end represents the ethernet device of
+the virtual machine. </p>
 
 EXERCISES()
 <ul>
@@ -261,11 +261,6 @@ EXERCISES()
 <ul>
 	<li> How many different IPv4 addresses exist? </li>
 
-	<li> Visit <a href="https://www.meineip.de">this page</a> which
-	claims to show the IP address of your computer. Check if the result
-	was correct by running <code> ip addr show</code>. Run <code> host
-	a.b.c.d </code> for the IP addresses and discuss the result. </li>
-
 	<li> What is the difference between the <em> maximum transmission
 	unit </em> (MTU) and the <em> path MTU</em>? </li>
 
@@ -338,11 +333,11 @@ works and how it can be used to identify networking problems.
 
 SECTION(«Transport Layer»)
 
-<p> The protocols of the transport layer provide message transfer services
-which are on one hand independent of the underlying network type,
-and on the other hand independent of the application. Different
-network services on running on the same host are distinguished by
-<em> port numbers</em>, which are 16 bit identifiers. Several  well
+<p> The protocols of the transport layer provide message transfer
+services which are on one hand independent of the underlying network
+type, and on the other hand independent of the application. Different
+network services running on the same host are distinguished by
+<em>port numbers</em>, which are 16 bit identifiers. Several well
 known port numbers are are associated with specific applications.
 The two dominant transport layer protocols on top of IP, TCP and UDP,
 are discussed in the following subsections. </p>