selftets: seg6: disable rp_filter by default in srv6_end_dt4_l3vpn_test

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[ Upstream commit f97b8401e0 ]

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: 2195444e09 ("selftests: add selftest for the SRv6 End.DT4 behavior")
Reported-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it>
Tested-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Andrea Mayer 2023-05-10 13:16:38 +02:00 • committed by Greg Kroah-Hartman

parent 7099beeec9

commit e412fa5d81

1 changed files with 6 additions and 5 deletions

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tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh

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