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[ Upstream commitc01a6e5b2e] The --send_omit_free flag is needed for TCP zero copy tests, to ensure that packetdrill doesn't free the send() buffer after the send() call. Fixes:1e42f73fd3("selftests/net: packetdrill: import tcp/zerocopy") Closes: https://lore.kernel.org/netdev/20251124071831.4cbbf412@kernel.org/ Suggested-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251125234029.1320984-1-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>