On Tue, Oct 13, 2020 at 4:13 AM Martin KaFai Lau <kafai@xxxxxx> wrote:
>
> The tcp_hdr_options test adds a "::eB9F" addr to the lo dev.
> However, this non loopback address will have a race on ipv6 dad
> which may lead to EADDRNOTAVAIL error from time to time.
>
> Even nodad is used in the iproute2 command, there is still a race in
> when the route will be added. This will then lead to ENETUNREACH from
> time to time.
>
> To avoid the above, this patch uses the default loopback address "::1"
> to do the test.
>
> Fixes: ad2f8eb0095e ("bpf: selftests: Tcp header options")
> Reported-by: Andrii Nakryiko <andriin@xxxxxx>
> Signed-off-by: Martin KaFai Lau <kafai@xxxxxx>
> ---
Less shelling out is always good :)
Acked-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
> .../bpf/prog_tests/tcp_hdr_options.c | 26 +------------------
> .../bpf/progs/test_misc_tcp_hdr_options.c | 2 +-
> 2 files changed, 2 insertions(+), 26 deletions(-)
>
[...]
