[ Upstream commit5216bd7779] After commit1c25324caf("net/sched: act_tunnel_key: Don't dump dst port if it wasn't set"), act_tunnel_key doesn't dump anymore the destination port, unless it was explicitly configured. This caused systematic failures in the following TDC test case: 7a88 - Add tunnel_key action with cookie parameter Avoid matching zero values of TCA_TUNNEL_KEY_ENC_DST_PORT to let the test pass again. Signed-off-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>