Re: [net 2/2] selftets: seg6: disable rp_filter by default in srv6_end_dt4_l3vpn_test

[David Ahern]

On 5/10/23 5:16 AM, Andrea Mayer wrote:
> On some distributions, the rp_filter is automatically set (=1) by
> default on a netdev basis (also on VRFs).
> In an SRv6 End.DT4 behavior, decapsulated IPv4 packets are routed using
> the table associated with the VRF bound to that tunnel. During lookup
> operations, the rp_filter can lead to packet loss when activated on the
> VRF.
> Therefore, we chose to make this selftest more robust by explicitly
> disabling the rp_filter during tests (as it is automatically set by some
> Linux distributions).
> 
> Fixes: 2195444e09b4 ("selftests: add selftest for the SRv6 End.DT4 behavior")
> Reported-by: Hangbin Liu <liuhangbin@xxxxxxxxx>
> Signed-off-by: Andrea Mayer <andrea.mayer@xxxxxxxxxxx>
> Tested-by: Hangbin Liu <liuhangbin@xxxxxxxxx>
> ---
>  .../testing/selftests/net/srv6_end_dt4_l3vpn_test.sh  | 11 ++++++-----
>  1 file changed, 6 insertions(+), 5 deletions(-)
> 

Reviewed-by: David Ahern <dsahern@xxxxxxxxxx>