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

elecman — Fri, 21 Nov 2025 14:50:21 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

$url="https://dev.azure.com";$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}}

expected result is 100% 200 ok,

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

Answer question in the previous post

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/ethernet)
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)
Instead of post a list of question to me, can you try my reproduce steps with hardware spec i list above? can you reachout via email so i can repsonse quickly instead of forum i lost track the thread for twice already

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

JedG_Intel — Mon, 24 Nov 2025 05:59:11 GMT

Hello elecman,

Thank you for posting on Intel Community Forum.

Thank you for sharing all the details, I really appreciate it. I understand that you’d like us to reproduce the issue, and to assist you better, I’ve sent you an email. Please check your inbox at your earliest convenience.

Best regards

Jed G.

Intel Customer Support Technician

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

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

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