On Wed, Oct 07, 2026 at 09:47:31AM +0800, Haishuang Yan wrote:
> On slow machines, do_test() raises initcwnd on the route into the tunnel
> with "ip route change". For IPv6 traffic this fails with:
>
> RTNETLINK answers: No such file or directory
>
> The IPv6 prefix route of the tunnel address has metric 256, while
> "ip -6 route change" without a metric looks for a route with the default
> metric 1024, so nothing is changed. The test still passes, but without
> the larger initcwnd it is meant to use.
>
> Pass the metric of the prefix route.
>
> Fixes: 1d62b83fb751 ("selftests: net: Fix slow configurations in
> big_tcp_tunnels.sh")
> Signed-off-by: Haishuang Yan <[email protected]>
> ---
> tools/testing/selftests/net/big_tcp_tunnels.sh | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
Reviewed-by: Narcisa Vasile <[email protected]>
