Date: Thu, 19 Dec 2024 09:06:03 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 165059] vtnet(4): Networking breaks with a router using virtio net driver on KVM host Message-ID: <bug-165059-227-Q4sBpu6lDL@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-165059-227@https.bugs.freebsd.org/bugzilla/> References: <bug-165059-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D165059 Tom Jones <thj@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |thj@FreeBSD.org --- Comment #34 from Tom Jones <thj@FreeBSD.org> --- Hi, This was highlighted to me as a long standing issue that the foundation mig= ht look at. There is a decade of discussion here and it isn't super clear if t= here are several symptoms that are addressed by disabling checksum offload or if there are multiple issues. I think there are two different cases (if I were writing tests, which I will try to). FreeBSD as a router on Linux KVM incorrectly skips checksum calculations breaking forwarding. FreeBSD as a router with checksum offload disabled is unable to forward suitable traffic rates. can someone confirm by reading of the thread and suggest other failure case= s? My preference would be to write tests for issues we can identify, close this bug and track fixing the tests in their own bugs. 10 years of comments is h= ard to reason about :). Ideally someone(s) running FreeBSD on KVM would help me populate a wiki page with exemplar use cases, that would allow me to find someone to help write tests and put together a test environment. --=20 You are receiving this mail because: You are the assignee for the bug.=
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