Malformed IPv4 packets fuzzing cause 20% more CPU spike than IPv6 packets fuzzing

0206bharti · 10-20-2014, 02:33 AM

I’m performing malformed IPv4 and IPv6 packets fuzzing on my Linux machine and monitoring the CPU and memory usage of Linux machine.
I’ve following observation

CPU % : 50-60%(IPv4) 30-40%(IPv6)
Avg. packets/sec sent: 15433.218(IPv4) 14449.875(IPv6)
Avg. packet size sent: 657.467 bytes(IPv4) 780.383 bytes (IPv6)
Avg. bytes/sec sent: 10146839.070(IPv4) 11276439.045(IPv6)

IPv4 fuzzing causes CPU spike 20% more than IPv6 fuzzing. Can anybody tell what causes this difference.

keefaz · 10-21-2014, 10:59 AM

Could you elaborate on the testing conditions?

0206bharti · 11-04-2014, 01:35 AM

Hi

I'm performing a vulnerability testing on my linux machine for that i'm fuzzing the linux machine with IPv4 and IPv6 packets and observing the impact of fuzzing on linux machine by observing CPU % and Memory Usage.
I noticed that in case of IPv4 packets CPU spike goes upto 50-60 %
however IPv6 packets fuzzing results into CPU spike of only 30-40%
and the data rate at which packets were sent shown in above post.
i want to know why the CPU spike is different in case of IPv4 & IPv6.