topic Re: Intel Connectivity Network Service is causing the ipv6 flowtable attribute set to 0 in Ethernet Products

Intel Connectivity Network Service is causing the ipv6 flowtable attribute set to 0

elecman — Sat, 13 Sep 2025 05:21:12 GMT

Dear all

I would like to report an issue that I notice on window 11 recently update

2025-02-07|4.1025.207.1|0xff0000|0|0|Intel Corporation|Intel Corporation|Intel(R) Connectivity Performance Suite|SWC\VID_8086&PID_ICPS&SID_0002

In windows update it is called 'Intel Corporation - SoftwareComponent- 4.1025.207.1

Once the service 'Intel Connectivity Network Service' it will clean up ipv6 flow table when ssl handshake started, does not matter which nic customer are using, intel or no-intel and wired or no -wired nic.

while ipv6 flow table got clean up it cause serious problem of ECMP setup big cloud network and flow has been randomly send to different backend device after tcp handshake was established.

the issue can be reproduce on windows 11 + Intel Connectivity Network Service (Intel Corporation - SoftwareComponent- 4.1025.207.1) with following reproduce script

expected result is 100% 200 ok,

but we see failed situation like below, once disable Intel Connectivity Network Service the issue is gone

Re:Intel Connectivity Network Service is causing the ipv6 flowtable attribute set to 0

Sreelakshmi1 — Tue, 16 Sep 2025 06:19:39 GMT

Hello elecman,

Greetings!

Thank you for posting in Intel community forum!

Kindly confirm below details to check the issue further.

Please share the model name of the Ethernet adapter/controller.
Also, kindly provide the system information where it is being used.
Additionally, could you clarify what you were referring to by 'Intel Connectivity'?

Best Regards,

Sreelakshmi

Intel Customer Support Technician

Re:Intel Connectivity Network Service is causing the ipv6 flowtable attribute set to 0

TejasMohan — Fri, 19 Sep 2025 11:58:47 GMT

Hello Elecman,

Greetings from Intel!

This is the first follow-up regarding the issue you reported to us.

We’d like to check if you were able to provide the requested details so we can continue assisting you toward a resolution.

Please reply to confirm, and we’ll be happy to proceed further. Looking forward to your response.

Best regards,

Tejas

Intel Customer Support Technician

Re:Intel Connectivity Network Service is causing the ipv6 flowtable attribute set to 0

Sreelakshmi1 — Mon, 22 Sep 2025 07:20:38 GMT

Hello Elecman,

Greetings!

We would like to inform you that we are closing this request as no response has been received from our previous follow-ups.

Please don't hesitate to ask any further questions in the future. Feel free to start a new conversation, as this thread will no longer be monitored.

Best Regards,

Sreelakshmi

Intel Customer Support Technician

Re: Intel Connectivity Network Service is causing the ipv6 flowtable attribute set to 0

elecman — Wed, 29 Oct 2025 01:33:44 GMT

i was on business travel not check the thread.

Please share the model name of the Ethernet adapter/controller.
HP laptop zbook firefly 14 inch G11 mobile workstation PC, BIOS HP W70 Ver 01.60.10 2025-05-30
WIFI-6E AX211 160Mhz, actually it does not matter, as long as i have this WIFI 6E adapter, Windows update will push software
"Intel(R) Connectivity Performance Suite" to my laptop and it will impact all NIC (usb/docker/ether
Also, kindly provide the system information where it is being used.
Additionally, could you clarify what you were referring to by 'Intel Connectivity'?
"Intel(R) Connectivity Performance Suite"
https://www.intel.com/content/www/us/en/download/738623/intel-connectivity-performance-suite-icps-for-intel-wireless-products-and-intel-connectivity-manager-icm.html

here is reproduce powershell script
you must have ipv6 enable on nic (wireless/ethernet either one is fine). your network is able to resolve dev.azure.com as ipv6
dev.azure.com [2603:1061:10:1::16] ,then you can reproduce when ICPS is installed (and Prioritization is set to ON)

$url="https://dev.azure.com";$interval=2;$timeout="1.0";$hostname=$url.split('/')[2].split(':')[0];$p=$url.split(':')[0];while ($true) {curl.exe -6 --tlsv1.3 --connect-timeout $($timeout) -s -w "remote_ip:%{remote_ip},dns_resolution:%{time_namelookup},tcp_established:%{time_connect},ssl_handshake_done:%{time_appconnect},TTFB:%{time_starttransfer},httpstatus:%{http_code},size_download:%{size_download}" $url -o "$($env:temp)\$($env:computername)_curl_$($p)_$($hostname)_result.html"|foreach {"{0},{1},{2}" -f (Get-Date).ToUniversalTime().ToString("yyyy-MM-dd HH:mm:ss"),$hostname,$_;"{0},{1},{2}" -f (Get-Date).ToUniversalTime().ToString("yyyy-MM-dd HH:mm:ss"),$hostname,$_|out-file "$($env:temp)\$($env:computername)_curl_$($p)_$($hostname).log" -append -encoding utf8; start-sleep $interval}}