[dpdk-users] UDP packet source IP address modified in the KVM host

Stephen Hemminger stephen at networkplumber.org
Wed Sep 19 18:04:19 CEST 2018

On Wed, 19 Sep 2018 08:57:52 +0530
Anupama Laxmi <anupamalaxmi4 at gmail.com> wrote:

> Hi,
> When the DPDK UDP packets pass from guest machine to host using KVM SRIOV
> the source IP address in the IP header of the UDP packet is changed.The
> changed IP address is not configured in the host machine either.The
> ifconfig output doesn't show this IP.How this IP address can change in the
> host?what configurations do I need to check and how to prevent this IP
> address change.
> Regards,
> Anupama

Are you really using KVM SRIOV or is it a virtio device with NAT?

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