[Bug 165059] vtnet(4): Networking breaks with a router using virtio net driver on KVM host

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 09 Jul 2025 18:35:16 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=165059

Chris Collins <chrysalis@chrysalisnet.org> changed:

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                 CC|                            |chrysalis@chrysalisnet.org

--- Comment #41 from Chris Collins <chrysalis@chrysalisnet.org> ---
Is anyone going to just crack on with it? 10 years of people repeatedly saying
they having to disable a very basic feature checksum offloading, following by
devs asking for one more confirmation before they want to look at it.

Ironically I dont know if I have the issue as I have always routinely disabled
checksum offloading on vtnet since day 1 following advice from pfSense
developers, luckily performance is ok.

But it is only today I think I have discovered the reason for this advice.

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