CODEWITHSUNDEEP
pythonstringipv6scapy
deepsky
deepsky

Reputation: 875

How to generate random IPv6 address using Python(or in Scapy)?

In my test case, I need to send out NA with random IPv6 source address and fixed prefix. For example:

fixed prefix 2001::cafe:/64. The remainder of the address should be random.

How to achieve in Python or in Scapy?

Upvotes: 4

Views: 8894

Answers (4)

Serdar Ebeng
Serdar Ebeng

Reputation: 141

Scapy has a function built-in to generate random ipv6 addresses.

source = RandIP6("2000::cafe:*:*")
print source

Note that, if its messing around with zero's , you need to add 2 lines in the broncode of scapy/volatile.py before line 286

if n == 0:
        ip.append("0")

Upvotes: 0

Gary van der Merwe
Gary van der Merwe

Reputation: 9533

Not sure from the question which parts of the address you want to be random. I'm assuming the last 2 bytes.

Using the python netaddr library:

import random
from netaddr.ip import IPNetwork, IPAddress

random.seed()
ip_a = IPAddress('2001::cafe:0') + random.getrandbits(16)
ip_n = IPNetwork(ip_a)
ip_n.prefixlen = 64

print ip_a
print ip_n

Sample output:

2001::cafe:c935
2001::cafe:c935/64

The advantage over simple string formatting, is it would be easy to customize the starting address, random bit len. Also the netaddr classes have many useful attr, e.g. the broadcast address of the network.

Upvotes: 5

Gary van der Merwe
Gary van der Merwe

Reputation: 9533

Just using string formatting:

import random

random.seed()
print '2001::cafe:%x/64' % random.getrandbits(16)

Upvotes: 0

Ruggero Turra
Ruggero Turra

Reputation: 17680

import random   
M = 16**4
"2001:cafe:" + ":".join(("%x" % random.randint(0, M) for i in range(6)))

Upvotes: 8

Related Questions