On Tue, Oct 21, 2025 at 12:57 AM Mark Michelson via dev <
[email protected]> wrote:

> This test currently fails with certain kernel versions. It has been seen
> to fail with the following:
>
> Fedora 41 running 6.14.9-200.fc41.x86_64
> Ubuntu 24.04 running 6.14.0-1012-azure
>
> The working theory is that these kernels have an improperly backported
> change that results in all IPv6 UDP communications disabling
> fragmentation. For our test that specifically sends IPv6 UDP packets
> larger than the MTU, this causes the test to fail unexpectedly.
>
> This commit is intended to allow the test to be skipped temporarily in
> Github CI runs until the runner image is updated to have the proper
> backport.
>
> Signed-off-by: Mark Michelson <[email protected]>
> ---
>

Hi Mark,

thank you for the patch, GH did a rollback in the meantime so we won't
need this. I'll mark it as deferred in patchwork.


> Note:
>
> I attempted to write this so that the test would only be skipped if the
> $GITHUB_ACTIONS variable was set to "true" but in my tests with Github,
> the test still would run and it still would fail. I'm not sure if I was
> checking the variable incorrectly, but I used the OVS project's use of
> the variable as a guide. If someone can actually get this working, I'll
> happily defer to that patch instead.
> ---
>  tests/system-ovn-kmod.at | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/tests/system-ovn-kmod.at b/tests/system-ovn-kmod.at
> index e9a4eece6..b8d0ffab3 100644
> --- a/tests/system-ovn-kmod.at
> +++ b/tests/system-ovn-kmod.at
> @@ -1006,6 +1006,7 @@ AT_CLEANUP
>  OVN_FOR_EACH_NORTHD([
>  AT_SETUP([Load Balancer LS hairpin IPv6 UDP - larger than MTU])
>  AT_SKIP_IF([test $HAVE_NC = no])
> +AT_SKIP_IF([:])
>  AT_KEYWORDS([lb])
>
>  ovn_start
> --
> 2.50.1
>
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>
>
Regards,
Ales
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