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Network Map and Domain Name

In today's lab you'll make a map of your network. This lab assumes that you have setup your DHCP server and you have completed the steps for "An IPv6 Network"


Now that you have internal IP addresses and a prefix you are ready to make a complete map of your Linux network. The map is a very handy thing to have when you're working on a network. Most networks have more than four hosts and it can quickly become impossible to remember what addresses you have assigned. 

Get your MAC Address Table

The MAC addresses you collected the previous week are the starting point for this lab. Make a table of this form:

 Hostname  MAC Address Private IPv4 Address
 IPv6 Address 
 router 00:50:56:af:da:0a (eth1) 2607:f380:80f:f901::1 (eth1)
 switch 00:50:56:af:14:16 (br0)  2607:f380:80f:f901:250:56ff:feaf:1416 (br0) 
 db-server 00:50:56:af:69:d7 2607:f380:80f:f901:250:56ff:feaf:69d7
 web-server 00:50:56:af:c5:d1 2607:f380:80f:f901:250:56ff:feaf:c5d1

Now that you have your MAC address table you should update the /etc/hosts file on each VM to reflect your network. Given my network the host files would look like this: 

# The router's /etc/hosts file.
# NOTICE that the line is still set and the new entries are below. localhost router

# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters router switch db-server web-server

2607:f380:80f:f901::1 router
2607:f380:80f:f901:250:56ff:feaf:1416 switch
2607:f380:80f:f901:250:56ff:feaf:69d7 db-server
2607:f380:80f:f901:250:56ff:feaf:c5d1 web-server

With your hosts files setup correctly you should be able to ping your VMs by name from anywhere inside your network. Submit your table with this lab.

Get Ready for DNS

In two weeks you will setup a DNS server. The DNS server will give you a real domain name. Your domain name will be:


When you submit this lab tell me what name you want and what external (eth0) static IP addresses of your router is. 

Turn In

  1. Your IP address table
  2. Your requested domain name
  3. The external (eth0) IPv4 and IPv6 addresses of your router
Submit the lab on canvas.