Public bug reported:
This device is a Raspberry Pi 4 with two TP-link gigabit NICs attached
by USB. I used this device to bridge two Ethernet segments together
instead of using a switch because I didn't have one available at the
moment. I discovered that TCP streams passing through the devices get
corrupted, leading to bad file transfers elsewhere in my home network.
The problem was fixed by disabling rx and tx offloading with ethtool for
both AX88179 NICs.
The issue is reproducible across reboots and responds immediately to
toggling offloading every time I've tried it. Aptitude originally found
the problem when it complained of bad package checksums. Small files can
sometimes get through with correct checksum, but anything over about
100MB appears to get corrupted unless offloading is turned off.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "version.log"
https://bugs.launchpad.net/bugs/2083630/+attachment/5824620/+files/version.log
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https://bugs.launchpad.net/bugs/2083630
Title:
NIC Offload Causes TCP Stream Corruption AX88179
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