IP Classes, What is and what isn't possible?

So, I've been looking on different websites, and using different subnet calculators, where in some cases it's possible and others it isn't possible. Are these IPs possible? Class A: 11.66.12.49/6...

Converting netmasks php

How can I convert a netmask to a specific netmask. Example: 127.0.0.0/16 Convert to /24 netmask. It should output something like: 127.0.0.0/24 127.0.1.0/24 127.0.2.0/24 127.0.2.0/24 etc. all the...

Subnet, can i use host id is zero?

I am confused that can we use the ip address with host id is zero? Such as below subnet example: Address: 192.168.18.23 Netmask: 255.255.248.0 Hosts/Net: 2046 HostMin: 192.168.16.1...

How to install busybox on android emulator (android 2.3.3)?

I am trying to install busybox on android emulator (android 2.3.3). I followed both methods given in the post https://stackoverflow.com/questions/5336154/pushing-busybox-into-android-emulator, but...

CIDR subnet calculation and python ipcalc

I am questioning the results of the ipcalc module (ipcalc) for Python (it seems that netaddr may be a better choice). Let's take 192.168.1.25/30 as an example. In binary, the last octet is...

Python error : X() takes exactly 1 argument (8 given)

I'm trying to bulid an Anonymous FTP scanner , but i got an error about calling function X , i defined X to recieve ony 1 arguement which is the ip address , the same code works if i don't use the...

Calculate the N IP of a network

I would like to know which N IP of a given network my IP is. For example 192.168.0.3 is the 3 IP of the network 192.168.0.0/20. The 256 IP would be 192.168.1.0 Is there a way to calculate this...

Validate form depending on another field

I have this form: class NetworkInput(forms.Form): IP = forms.GenericIPAddressField() Netmask = forms.IntegerField() The users should be able to enter an IPv4 or an IPv6...

ipcalc output and grep. Want to return only the binary output

I have a command using ipcalc that gives me this output. Is there a way using sed or awk to only show the binary value? [email protected] ~/Documents $ ipcalc 192.168.1.2 | grep Address Address:...

How to install GCC and/or apt on embedded linux Raspberry Pi

I have a pre-configured linux distro on a raspberry pi (used for a bitcoin miner). The problem is that this distro is very minimal, only has busybox for basic commands. It doesn't have a package...

Get a list of subnets matching a given CIDR

I'm trying to take a known subnet ID and CIDR mask, e.g., 10.0.0.0/22, and get a list like this: [('10.0.0.0', '10.0.3.255'), ('10.0.4.0', '10.0.7.255'), ... ('10.255.252.0',...

how to join or split ip networks with php

I have a task that seems to include a subtask. Take two or more ip segments ( could be 192.168.1.32/27, 192.168.1.64/28 and 192.168.1.128/25) and join them into the closest segment (192.168.1.0/24...

How to make ipcal take list of ip address in cidr

i am able to make ipcal to give me the NETMASK using the code below.how can i make it take a list of ip address in cidr notation like 41.80.0.0/17 and give me only the ip address of netmask.if i...

Find if IP exists in range of CIDR IPs by hand Python

I have a list of IPs with a CIDR notation such as: 10.10.1.32/27 What i want to do is check if an IP falls into that range. So i want to be able to see if 10.10.1.44 falls in there, which it...

Calculate broadcast ip address using ipcalc

I have a list of ip addresses in cidr formart in a text file,one cidr per line and I would like to calculate the broadcast ip address of the cidr. I understand that I can do that using ipcalc with...

Get all IP addresses in a range in PHP

I have 900+ IP address ranges from the Microsoft Azure datacentres (http://www.microsoft.com/en-us/download/confirmation.aspx?id=41653) and I want to find out if an IP address is coming from one...

check for subnet conflicts

I'm writing a script that gets a /16 and breaks it down into different subnets (/24, 23, 27, etc). I realized that I may run into conflicting subnets, and I'm looking for a way to check that. I...

RestComm build and run on MAC OS from source

I am new to restcomm two days ago i start following getting start guide and build restcomm from source. I am able to build successfully on my Mac machine but when i am trying to run JBoss server...

python based IP address calculator (IPCALC) code

I've the python CGI for user entered input for IP address calculation but python ipcalc is not taking input as a variable, for example I'm trying to run this code >>> import ipcalc >>>...

Extract an unassigned subnet CIDR block from a fragmented VPC

Lets suppose you have a VPC with a given cidr block. Let's say 10.0.0.0/16. Now let's say you have assigned about 20 subnets from the VPC. And those subnets are neither contiguous nor of the same...

Write a bash script to subdivide an given subnet into a pre-defined number of smaller subnets

This question was recently asked in an interview. Question: Write a bash script to subdivide an given subnet into a pre-defined number of smaller subnets. After division IP addresses shouldn't...

Why xor() does not work on openwrt

We are porting openwrt to our device which is a mips platform. But we found the service "dnsmasq" can't be started correctly on our device. Then we found the root cause, "/etc/init.d/dnsmasq" used...

Swift linux unit test @testable import fails

I try to add Unit tests to my Swift project on Linux Ubuntu 16.04. Now I have the directory structure: MyProject |-Sources | └MyProject | |-IPcalc.swift | └ main.swift | |-Tests |...

Swift Building IP 4 address class for a iOS project

I was trying to create my own class for IP Address. I want to use this for a iOS project. I'm trying to figure out were to put the code to put the range between 0 to 255. The separator isn't...

Not able add extra IP to vps server in OVH

I am trying to add extra IP to my OVH vps server by following there guide but getting this error. I am using cent os 6 - 64bit using this guide to add IP to my vps server...

busybox init script. Mount not found

I'm running in to what appears to be a bit of an odd one. Base machine is Ubuntu 18.04. I'm experimenting with creating a custom initramfs + init script to use with custom compiled kernels that...

Validating a CIDR IP to set for an interface

I'm writing a bash script, which sets a fixed IP for an interface. I'd set the chosen IP with sudo ip addr change dev eth0 192.168.3.14/24. For this I'll need to validate the user given CIDR IP...

How to use ipcalc to validate IP in a Bash script?

I need to validate an IP with bash script and if it was valid, run another command. i used ipcalc command. but not sure why return wrong result ... I changed 0 to 1 .. false .. true but never got...

Mysql will not install due to mariadb install but mariadb is not installed

Been trying for hours to get mysql installed but it failed due to a conflict. This is a brand newly installed CentOS 8 x64 (latest) and it's fully updated. There are no custom packages installed...

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