route.paths[1].hops[0].short_channel_id = chan_2_id;
route.paths[1].hops[1].short_channel_id = chan_4_id;
send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], 200_000, payment_hash, payment_secret);
route.paths[1].hops[0].short_channel_id = chan_2_id;
route.paths[1].hops[1].short_channel_id = chan_4_id;
send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], 200_000, payment_hash, payment_secret);