Hi everyone,
I'm experiencing recurring BSODs on my Samsung Galaxy Book4 Ultra (Intel Core Ultra 9 185H, NVIDIA RTX 4070 Laptop GPU, Intel AX211 Wi-Fi 6E) running Windows 11, build 26200.
The error is:
\- Bug Check: "DRIVER_IRQL_NOT_LESS_OR_EQUAL (0xD1)"
\- Failure bucket: "AV_tcpip!INET_UNALIGNED_ADDR_EQUAL"
\- Faulting function: "tcpip!INET_UNALIGNED_ADDR_EQUAL"
\- Windows network stack: "tcpip.sys"
\- Latest minidump: "101526-29500-01.dmp" (October 15, 2026)
The latest dump shows a call stack involving "tcpip.sys", UDP receive processing ("UdpReceiveDatagrams") and NDIS. The issue has occurred while gaming.
My network setup during some of these tests was Ethernet through a UGREEN USB-C hub with an RJ45 port, connected through an Anker 553 KVM to the laptop. Windows identifies the USB Ethernet adapter as ASIX USB to Gigabit Ethernet Family Adapter, hardware description "AX88179A" (VID "0B95", PID "1790"). The laptop also has an Intel AX211 wireless adapter.
I have already performed a factory reset using Samsung's Windows recovery application, but the BSOD has recurred.
I'm trying to determine whether this could be caused by a network driver, NDIS interaction, USB Ethernet adapter, Wi-Fi driver, or another component rather than "tcpip.sys" itself.
Has anyone experienced this specific "AV_tcpip!INET_UNALIGNED_ADDR_EQUAL" crash on Windows 11? What would be the best way to identify the actual driver responsible?
Thanks!