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The IP address for the computer was 169.254.x.x and the subnet mask was 255.255.255.0.The 169.254 address is an APIPA (Automatic Private IP Addressing) address that is assigned when no DHCP server is available or reachable.
In the above example, when a computer assigns a private network address to itself, this would only make sense if the router of that private network knew and agreed that this computer has this address. So can any packet ever come to While the other answer(s) outline why static IP addressing exists, I want to answer your part of the question as to how it works. A second client 172.17.0.42 wants to communicate with 172.17.0.12. It is effectively yelling all over the place "Who has the IP Address 172.17.0.12? 172.17.0.12 answers and communication is established. Note that if there are two clients who claim to have the same IP address, chaos ensues.
An IP address can be assigned by a responsible device on the LAN, for example a Server or Router, using a called DHCP.
This can cause crosstalk between the wires inside the cable.
If nothing is working for you, then you can also try to run the built-in Windows troubleshooter if you are using Windows 8 or Windows 10.
You may also get an error like this: For example, if you have a static IP address, then renewing will never work.
You can tell if you have a static IP address by typing in IPCONFIG by itself and making sure it’s something other than 169.254.
This tool can fix more obscure issues that I haven’t mentioned here. If not, post a comment with your error and I’ll try to help!
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Disable any firewall software and remove or disable programs like Zone Alarm and Norton Internet Security as they can get in the way sometimes.
Finally, the problem of not being able to renew your IP address could be because of the network interface card (NIC) itself.