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commit0935ee6032("selftests: netfilter: add test case for recent mismatch bug") added a regression check for incorrect initial fill of the result map that was fixed with791a615b7a("netfilter: nf_set_pipapo: fix initial map fill"). The test used 'nft get element', i.e., control plane checks for match/nomatch results. The control plane however doesn't use avx2 version, so we need to send+match packets. As the additional packet match/nomatch is slow, don't do this for every element added/removed: add and use maybe_send_(no)match helpers and use them. Signed-off-by: Florian Westphal <fw@strlen.de> Reviewed-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>