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Questions tagged [ipv4]

Refers to the 4th revision of the Internet Protocol, where addresses are usually displayed in the form: 192.0.2.235

The IP address of a device is its unique identifier on a network which allows communication with that device.

A network will expose a few addresses to the outside Internet and machines on that network will communicate via these gateways.

Due to the explosion of devices connected to the Internet there are real fears of IPv4 address exhaustion which has led to the use of addresses.

IPv4 on Wikipedia

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Why do ISPs change your IP address?

Is there any specific reason an ISP will need to change your IP address? What is the purpose of a dynamic IP versus a static IP? For me it seems to happen every 6 months, while for someone I know, it does once a week.
agz
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Why were the ipv4 private address ranges chosen to be what they are?

Possible Duplicate: Why are home networks prefixed with 192.168? What makes the numbers 192.168 or 10. or 172.16 so special that those addresses, as opposed to other ones, were chosen as the private ipv4 ranges?
Tneuktippa
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Windows 7 ipv4 autoconfiguration - cannot connect to internet

I get my internet connection from a guy (lets call him my service provider henceforth). He gives internet connections to many students here in my hostel. My PC gets a private IP through his DHCP server. Now, when I switch on my WiFi, my PC gets a…
GuiccoPiano
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How to extend ipv4 addresses to 64 bit?

I know that ipv4 addresses are 32 bits. But is it possible to extend the ipv4 addresses to 64 bit from 32 bit?
user3330378
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Automatic ipv4 interface metrics algorithm?

Here is the link in reference http://support.microsoft.com/kb/299540 .Is there anything similar for windows 7 ?
HelloWorld_Always
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Change of OVH Primary IPV4 Address

Does anyone know if it's possible to change the Primary IPV4 address of an OVH Dedicated Server (Ubuntu 20.04) to a Failover IPV4 attached to the server? I am not wanting to configure/attach the failover IP, but rather make it the actual…
Pierce Gearhart
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why is IPv4 HIL contained in total length?

in Ipv4 packet there are both IHL and Total Length i understand that there is a need to know the size of the data, but why would I want to count the header length in two places instead of having HIL and Data length? i read rfc791 Total Length: 16…
joe joe
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