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Questions tagged [ipv4]

IPv4 is the "old style" IP protocol currently used in most circumstances.

IPv4 is the protocol which has been in use since the early 1980s, described in IETF publication RFC791. It gets gradually replaced with nowadays as the IPv4 addresses become exhausted.

More information at http://en.wikipedia.org/wiki/Ipv4

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Could IPv4 exhaustion not be pushed back by allowing some of 127.*.*.* (not .0.0.1) to be allocated?

It seems to be that most firmware should, by now at least, look for 127.0.0.1 for the loopback and not, e.g. 127.*.*.*
Fubarro
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How to reverse IPv6 address for DNS lookup - C++

in my project I need to reverse IPv6 IP address for future DNS lookup. Example: From: 2001:db8:85a3:0:0:8a2e:370:7334 To: 7334:370:8a2e:0:0:85a3:db8:2001 How can I do this with c++? Thanks for your answers :) PS: For IPv4 I´m using this solution: …
Ondra Studnička
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Raspberry Pi gets a 192.168.x.x address, but rest of my home network is 10.21.179.x

There is a lot of history here, so please bear with me. Our home network used to be fine when we were with Comcast, but we wanted better speed and reliability, so we switched to FIOS. At that point, the Wifi connections from my Raspberry Pis stopped…
Rben
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how does a dhcp enabled router handle static ip address machines?

in this scenario, you have a router/modem combo with dhcp enabled. no control over dhcp, but this router seems to always assign the same ip address to the same devices. lets say the router assigns 192.168.0.27 to a local machine. you, in turn, set a…
Douglas Bentley
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How to represent an unspecified IPv4 address?

I am working on a distributed application written in Node.js, where the public-facing server receives messages from the client over HTTP from time to time. On receipt, the messages are turned into the following JSON structure: { "message": { …
Golo Roden
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Is Communication Through Private IP Of 2 VPS On The Same Region Faster Than Communication Through Their Public IP?

So, I have two instances on Linode. Both of them came with a public IP and a private IP. I'm using one instance as my application backend and other as database server. Now I'm wondering by which IP it is better to connect to the database instance…
Atiab Jobayer
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Block ASN instead of IP/CIDRs on Ubuntu

I am planning to block too many IPs (60k CIDRs) so I am concerned about the performance of my f1.micro (512MB RAM) Ubuntu 18 server. Is it possible to block ASN instead of blocking individual CIDRs? If not possible then what would be the best…
Kolkata Calcutta
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How to get Public-ip Address client-side in React which is compatible with internet Explorer(11)?

My application is working in google chrome.but after getting client side ip using library 'public-ip'. It has stop working in internet explorer(11). Any one have solution for that?.
Vatsal Harde
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Write a C program to read an IPv4 address and to check its validity

I know my error is within the arrangement of the {} but can't tell where. I've been trying to fix it for an hour. I'm not sure if there's something wrong with my code. Also, I'm new in coding so please baby steps if you can. #include…
Nor Escartin
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Does each device have ip4 address?

I'm looking at our mobile install data and we have a few hundred thousand mobile app installs in the US. However, our analytics platform provides only IP4 address of each install -- however, I thought most US wireless carriers have switched to ipv6…
A quiet hum
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Is there an ethernet link layer protocol to get remote IPv4 settings?

Given one or more embedded devices of the same type with some unknown IPv4 addresses or maybe no IPv4 addresses set at all: is there any Ethernet based network protocol to ”find“ those devices in the local net (LAN) from remote (PC) and get their…
LeSpocky
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Google Recaptcha check timeout due to IPv6 issue - php on IIS

I'm using google recaptcha v2 on my websites (html / php). On the server side I am trying to contact google recaptcha to check the user's input: $response =…
Phil Teare
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How can I find these addresses?

In class B subnet, we know the IP addressof one of the host and mask is give below. IP address - 182.44.82.16 subnet mask - 255.255.255.192 what is…
Ajinkya Bhushan
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Can I reach my ipv6 website via ipv4?

At my researching time, I found these relevant topics: access ipv6 website over ipv4 network, Access IPV6 with IPV4 [closed] and IPv6 Webserver reachable for IPv4 only Clients. My situation: I have a public ipv6 and a local ipv4 at home. I tried…
dsicari
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Freenas/FreeBSD Mapping IPv6 to IPv4

I have an Plexmediaserver in a Freenas Jail, which I can acess with an IPv4 adress on a specific port. But I also need to acess it with IPv6. I need a portmapper or something like this. For Windows i found the following: netsh interface portproxy…
Jano
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