Overlapping Networks

Overlapping Networks
We’ll start with a couple of examples to define an overlapping network. Let’s say your internal
network uses an IP address range that is owned by another company and is being used by that
company on the Internet. Another possibility might be that you have merged with a company
and you are both using the same RFC 1918 address space and do not want to renumber.
Figure 3.5 shows an example of NAT translating overlapping addresses.