OH MY.. Why Have I Got 4 Ip Addresses

There are many reasons why this is a bad thing1 but it is necessary simply because there are not enough IPv4 addresses to go around. What many ISPs do now is implement CGN where many people share a single public IPv4 address.


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And that IP address will be different from the one you would have if you used the free wireless hotspot at a coffee shop or hotel.

Why have i got 4 ip addresses. The Mac can have as many internal IP addresses as network interfaces are active. Combine the four octets and you get 232 or a possible 4294967296 unique values. That is the common structure for all IPv4 addresses v4 stands for version 4.

But they all have one thing in common. Hi if you have Mack. So if you have the Wi-Fi up and connect via a patchcord you will have 2 IP addresses.

Out of the almost 43 billion possible combinations certain values are restricted from use as typical IP addresses. For example the IP address 0000 is reserved for the default network and the address 255255255255 is used for broadcasts. They will be in four sections separated by three periods or dots.

This is why we need IPv6 and probably why.


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