Bug 1165

Summary: IPv6 router solicitation and neighbor discovery packets are being sent with no reason.
Product: DPDK Reporter: Igor (igordptx)
Component: ethdevAssignee: dev
Status: UNCONFIRMED ---    
Severity: minor CC: stephen
Priority: Normal    
Version: 21.08   
Target Milestone: ---   
Hardware: x86   
OS: Linux   
Attachments: Output of tcpdump on a dpdk port.

Description Igor 2023-02-23 13:54:22 CET
Created attachment 241 [details]
Output of tcpdump on a dpdk port.

I have an app running on two dpdk ports.
For some reason with no traffic being generated I am noticing a lot of IPv6 ICMP
traffic on the ports connected. I am connecting port 0 to port 1 and there is a ton of ICMP packets. The application shouldn't generate any traffic.
From what I understand dpdk should not generate any traffic.
Comment 1 Stephen Hemminger 2023-02-23 19:16:21 CET
DPDK itself doesn't generate any packets.
Your bug report is missing lots of information such as:
1. What DPDK application are you using
2. What is the hardware type


Most likely, you are using some form of kernel networking as well, and the Linux kernel is deciding to do IPv6 discovery on that interface.

Also 21.08 is an interim version of DPDK and no longer supported.
Current LTS versions are 21.11, 22.11, etc.