Forum Discussion
CAX 80 injecting malformed TCP RSTs
I have a CAX80 that appears to be actively interfering with and terminating encrypted TLS connections by injecting malformed TCP Reset (RST) packets. This occurs even with the following disabled: ...
Oops, meant to reply to you, my reply is below. And seeing if the code blocks clean up:
$ sudo dmesg | grep iwl | grep -m 1 firmware
[ 5.046536] iwlwifi 0000:00:14.3: loaded firmware version 89.df9556fc.0 so-a0-gf-a0-89.ucode op_mode iwlmvm
$ modinfo iwlwifi | grep ^filename
filename: /lib/modules/6.18.7-arch1-1/kernel/drivers/net/wireless/intel/iwlwifi/iwlwifi.ko.zst
and
$ sudo lspci -v -s 00:14.3
00:14.3 Network controller: Intel Corporation Alder Lake-P PCH CNVi WiFi (rev 01)
Subsystem: Intel Corporation Dual Band Wi-Fi 6E(802.11ax) AX211 160MHz 2x2 [Garfield Peak]
Flags: bus master, fast devsel, latency 0, IRQ 16, IOMMU group 13
Memory at 618d1d4000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [c8] Power Management version 3
Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [40] Express Root Complex Integrated Endpoint, IntMsgNum 0
Capabilities: [80] MSI-X: Enable+ Count=16 Masked-
Capabilities: [100] Latency Tolerance Reporting
Capabilities: [164] Vendor Specific Information: ID=0010 Rev=0 Len=014 <?>
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
What FW version is loaded on the CAX80?
Drivers for adapters up to date? There a driver version?
Which ISP are you connected too?
Happens with a different PC or laptop?
Wireless configuration on the CAX80?
What FW version is loaded on the CAX80?
v5.1.1.8
Drivers for adapters up to date? There a driver version?
It's built into the kernel, so the driver versions align with the kernel version. A kernel update is available, but this has been happening for a while, over many previous kernel versions. I can go from 6.18.7 -> 6.18.9, but I would have to dig through kernel change log to see if the drivers have been touched in that time.
$ sudo pacman -Qo /lib/modules/6.18.7-arch1-1/kernel/drivers/net/wireless/intel/iwlwifi/iwlwifi.ko.zst /usr/lib/modules/6.18.7-arch1-1/kernel/drivers/net/wireless/intel/iwlwifi/iwlwifi.ko.zst is owned by linux 6.18.7.arch1-1If you want to suggest an alternate linux driver, so long as it has DKMS, I should be able to install it no problem.
Which ISP are you connected too?
Xfinity
Happens with a different PC or laptop?
Difficult to reproduce, as it's only happening against resources I have access to from my work laptop. I can't access the same resources from my PC. I can however, put my laptop on my phone's hotspot, disconnect the phone from WiFI, and the problem goes away.
Wireless configuration on the CAX80?
AX enabled
Smart Connect disabled
2.4GHz enabled
WPA2-PSK [AES]
5GHz enabled (separate SSID)
WPA2-PSK [AES]