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Questions tagged [ipv4]

Refers to the 4th revision of the Internet Protocol, where addresses are usually displayed in the form of dotted decimals between 0-255. Ex: 169.254.0.1

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

Given the fact that only 2^32 IPs are available, number which is already depleted, its successor (IPv6) has officially taken over on 6 June 2012.

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Is there a global shortage of IP addresses or not?

This is bugging me a bit, so would like some help. Here's some data I've gathered: Apparently, an IPv4 address can range from 0.0.0.0 through to 255.255.255.255, providing up to 4,294,967,296 unique IPv4 addresses, although according to this…
AutoBaker
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Do anycast addresses imply IPv6?

From what I understand, as a random user on the Internet, you cannot really know if an IPv4 address is unicast or anycast. However if you ping that IPv4 from two hosts physically located on two different continents far apart and get a ping time <…
Cedric Martin
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Why are Class E IPs in use?

According to all documentation, class E IPs - those in the range 240.0.0.0 to 255.255.255.255 - are for research purposes only and should never be assigned or used. And yet, according to a review of access logs in a site I run, upwards of 70% of…
sgfit
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IPv6 is comming

Very soon, all of us will face one of the greatest changes in the global network in last 30 years: moving to the IPv6. So many system administrators will have to decide, how to handle this problem: which tools and techniques to use to connect their…
Alexey Shatygin
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How can I appear to be coming from a certain IP address?

I have a friends IP and I want to appear to be coming from his specific IP to the outside world. How can I do that besides actually taking over his computer? Thanks!
user418715
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