On Tue, 17 Mar 2026 18:01:17 -0700 Pin-yen Lin wrote: > Toggling checksum offload (or HW-GRO via feature dependencies) can cause > certain physical interfaces to undergo a reset or a temporary link-down > state. In the ping.py test, this leads to immediate test failures if the > ping is attempted before the carrier is restored. > > This is observed when running the test with GVE driver when HW-GRO is > enabled. When checksum offload is toggled, HW-GRO is toggled as well > because of the feature dependency. This leads to an interface reset, > causing the subsequent ping to fail. > > Add a sleep period after changing these features to allow the link to > stabilize.
Sounds like the test found a legitimate problem. The configuration should not return to user space until the operation has completed. User should not have to sleep 10sec each time they touch NIC configuration. -- pw-bot: reject
