Bug 1165 - IPv6 router solicitation and neighbor discovery packets are being sent with no reason.
Summary: IPv6 router solicitation and neighbor discovery packets are being sent with n...
Status: UNCONFIRMED
Alias: None
Product: DPDK
Classification: Unclassified
Component: ethdev (show other bugs)
Version: 21.08
Hardware: x86 Linux
: Normal minor
Target Milestone: ---
Assignee: dev
URL:
Depends on:
Blocks:
 
Reported: 2023-02-23 13:54 CET by Igor
Modified: 2023-02-23 19:16 CET (History)
1 user (show)


Attachments
Output of tcpdump on a dpdk port. (307.62 KB, image/png)
2023-02-23 13:54 CET, Igor 		Details
Add an attachment (proposed patch, testcase, etc.)

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.
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