How to get the IP prefix while we have subnet and IPv4 address using python-netaddr?

python ip python-2.7 ip-address inetaddress
Amit Pal picture Amit Pal · May 30, 2012 · Viewed 18.1k times · Source

I am using python-netaddr library to work on IP Addresses and subnets. I read the full documentaion of netaddrd given: Netaddr documentation. But didn't found any solution to my problem. I have a IP Address and subnet i want to get prefix for that ip by using both of them. So that i can print all of the ip coming into the subnet.

For example:

Ip Address: 192.0.2.0
Subnet Network: 255.255.255.0

It should return the prefix which is : 24

Answer

Maria Zverina picture Maria Zverina · May 30, 2012

To get 24 you can use the following snippet

ip = IPNetwork('192.0.2.0/255.255.255.0')
print ip.prefixlen

But if you want list of all addresses in the subnet it's easier to use:

ip = IPNetwork('192.0.2.0/255.255.255.0')
list(ip)

Related questions

socket.error:[errno 99] cannot assign requested address and namespace in python

My server software says errno99: cannot assign requested address while using an ip address other than 127.0.0.1 for binding. But if the IP address is 127.0.0.1 it works. Is it related to namespaces? I am executing my server and client codes in …

Read More
How can I get the public IP using python2.7?

How can I get the public IP using python2.7? Not private IP.

Read More
Send packet and change its source IP

Lets say I have an application written in python to send a ping or e-mail. How can I change the source IP address of the sent packet to a fake one, using, e.g., Scapy? Consider that that the IP …

Read More