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School/Analyse/Layers/3. Network Layer.md
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@ -113,5 +113,16 @@ Example 144.24.13.172/**20 (20 bits used for network ID)**
Also the following addresses are not used as a valid and unique IPv4 Addresses:
10.0.0.0 - 10.255.255.255/8 (16.777.216 hosts)
172.
172.16.0.0 - 172.31.255.255/12 (1.048.576 hosts)
192.168.0.0 - 192.168.255.255/16 (65.536 hosts)
We use these IP addresses as local addresses. The local addresses are translated into a global IP when sending messages to a host in a other network. This translation process is called NAT.
### Scarce IP address problem
With 32 bits, the maximum possible IPv4 addressed is 2^32 = 4 billion
**We need more addresses.**
## IPV6
Solution