Networking: Remove exercise about www.meineip.de.

This site went offline recently. It now redirects to a different
page which requires javascript and requires the user to enter a
captcha.

diff --git a/Networking.m4 b/Networking.m4
index b469442dbe68704451ecf23aa4ebd35bdb6c8f77..a3a5d650b0556bb245fbefd7d0c45daa5cfff5a8 100644 (file)
--- a/Networking.m4
+++ b/Networking.m4
@@ -261,11 +261,6 @@ EXERCISES()
 <ul>
        <li> How many different IPv4 addresses exist? </li>
 
 <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>
 
        <li> What is the difference between the <em> maximum transmission
        unit </em> (MTU) and the <em> path MTU</em>? </li>