# Realtek r8127 Ethernet NIC disappears on every reboot, only recovers with full power cycle

**URL:** <https://forums.developer.nvidia.com/t/realtek-r8127-ethernet-nic-disappears-on-every-reboot-only-recovers-with-full-power-cycle/360654>\
**Category:** DGX Spark / GB10\
**Tags:** networking, pcie, ethernet\
**Created:** [February 15, 2026, 8:50pm UTC](https://forums.developer.nvidia.com/t/realtek-r8127-ethernet-nic-disappears-on-every-reboot-only-recovers-with-full-power-cycle/360654 "2026-02-15T20:50:08Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![czankel](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/czankel/32/14043_2.png) [@czankel](https://forums.developer.nvidia.com/u/czankel)\
**Post date:** [February 15, 2026, 9:48pm UTC](https://forums.developer.nvidia.com/t/realtek-r8127-ethernet-nic-disappears-on-every-reboot-only-recovers-with-full-power-cycle/360654/3 "2026-02-15T21:48:02Z")

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Could you please check what driver you are using (lspci -vv)?

```auto
Kernel driver in use: r8127
Kernel modules: r8169, r8127

```

It should be `r8127`. The `r8169` driver causes the device to disappear after soft-reboot. Simply blacklist the driver, e.g. add `modprobe.blacklist=r8169` to the kernel command line.

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