diff --git a/go.mod b/go.mod
index 5726a63..466cc37 100644
--- a/go.mod
+++ b/go.mod
@@ -11,7 +11,7 @@ replace (
 require (
 	github.com/datachainlab/ethereum-ibc-relay-chain v0.3.18
 	github.com/datachainlab/ibc-hd-signer v0.1.3
-	github.com/hyperledger-labs/yui-relayer v0.5.16
+	github.com/hyperledger-labs/yui-relayer v0.5.19
 )
 
 require (
diff --git a/go.sum b/go.sum
index dbd82cb..cbce190 100644
--- a/go.sum
+++ b/go.sum
@@ -777,8 +777,8 @@ github.com/huandu/skiplist v1.2.0/go.mod h1:7v3iFjLcSAzO4fN5B8dvebvo/qsfumiLiDXM
 github.com/hudl/fargo v1.3.0/go.mod h1:y3CKSmjA+wD2gak7sUSXTAoopbhU08POFhmITJgmKTg=
 github.com/huin/goupnp v1.3.0 h1:UvLUlWDNpoUdYzb2TCn+MuTWtcjXKSza2n6CBdQ0xXc=
 github.com/huin/goupnp v1.3.0/go.mod h1:gnGPsThkYa7bFi/KWmEysQRf48l2dvR5bxr2OFckNX8=
-github.com/hyperledger-labs/yui-relayer v0.5.16 h1:NauHZ08JsfIvkzopafR/5/TbRCAH7JSUgqm7YrUEQ/4=
-github.com/hyperledger-labs/yui-relayer v0.5.16/go.mod h1:tGNMIE1y4cGNyRRKhR9rfBtCGLVjgejf3EIXouvdDQc=
+github.com/hyperledger-labs/yui-relayer v0.5.19 h1:PuEOXXGjq9tjzzdOTYtA1KAE0hETAsMd3a8YMkMjZuE=
+github.com/hyperledger-labs/yui-relayer v0.5.19/go.mod h1:tGNMIE1y4cGNyRRKhR9rfBtCGLVjgejf3EIXouvdDQc=
 github.com/iancoleman/strcase v0.3.0 h1:nTXanmYxhfFAMjZL34Ov6gkzEsSJZ5DbhxWjvSASxEI=
 github.com/iancoleman/strcase v0.3.0/go.mod h1:iwCmte+B7n89clKwxIoIXy/HfoL7AsD47ZCWhYzw7ho=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
diff --git a/relayer/main.go b/relayer/main.go
index b5e6900..8ee0e86 100644
--- a/relayer/main.go
+++ b/relayer/main.go
@@ -5,8 +5,10 @@ import (
 
 	"github.com/datachainlab/ethereum-ibc-relay-chain/pkg/relay/ethereum"
 	"github.com/datachainlab/ibc-hd-signer/pkg/hd"
+	debug_chain "github.com/hyperledger-labs/yui-relayer/chains/debug/module"
 	tendermint "github.com/hyperledger-labs/yui-relayer/chains/tendermint/module"
 	"github.com/hyperledger-labs/yui-relayer/cmd"
+	debug_prover "github.com/hyperledger-labs/yui-relayer/provers/debug/module"
 	mock "github.com/hyperledger-labs/yui-relayer/provers/mock/module"
 )
 
@@ -14,6 +16,8 @@ func main() {
 	if err := cmd.Execute(
 		tendermint.Module{},
 		mock.Module{},
+		debug_chain.Module{},
+		debug_prover.Module{},
 		ethereum.Module{},
 		hd.Module{},
 	); err != nil {
diff --git a/tests/cases/docker-compose-test.yaml b/tests/cases/docker-compose-test.yaml
index 524554a..90a2581 100644
--- a/tests/cases/docker-compose-test.yaml
+++ b/tests/cases/docker-compose-test.yaml
@@ -39,13 +39,13 @@ services:
     container_name: tendermint-chain0-mock
     environment:
       USE_MOCK_CLIENT: 1
-      IBC_CHANNEL_UPGRADE_TIMEOUT: 30000000000
+      IBC_CHANNEL_UPGRADE_TIMEOUT: 480000000000 #480 sec
   tendermint-chain1-mock:
     <<: *tendermint-chain1
     container_name: tendermint-chain1-mock
     environment:
       USE_MOCK_CLIENT: 1
-      IBC_CHANNEL_UPGRADE_TIMEOUT: 30000000000
+      IBC_CHANNEL_UPGRADE_TIMEOUT: 480000000000 #480 sec
 
 # Ethereum
   ethereum-geth0:
diff --git a/tests/cases/tm2eth/Makefile b/tests/cases/tm2eth/Makefile
index 0fa0935..9e972fb 100644
--- a/tests/cases/tm2eth/Makefile
+++ b/tests/cases/tm2eth/Makefile
@@ -1,5 +1,7 @@
 include ../../docker.mk
 
+export USE_FAKELOST ?= yes
+
 .PHONY: network
 network:
 	TAG=${DOCKER_TAG} $(DOCKER_COMPOSE) \
@@ -15,6 +17,7 @@ test:
 	./scripts/test-channel-upgrade
 	./scripts/test-mockapp-packet-relay
 	./scripts/test-ics20-packet-relay
+	./scripts/test-service
 
 .PHONY: network-down
 network-down:
diff --git a/tests/cases/tm2eth/configs/demo/ibc-0.json b/tests/cases/tm2eth/configs/demo/ibc-0.json
index c683dd6..e5f973a 100644
--- a/tests/cases/tm2eth/configs/demo/ibc-0.json
+++ b/tests/cases/tm2eth/configs/demo/ibc-0.json
@@ -1,17 +1,23 @@
 {
   "chain": {
-    "@type": "/relayer.chains.tendermint.config.ChainConfig",
-    "key": "testkey",
-    "chain_id": "ibc0",
-    "rpc_addr": "http://localhost:26657",
-    "account_prefix": "cosmos",
-    "gas_adjustment": 1.5,
-    "gas_prices": "0.025stake",
-    "average_block_time_msec": 1000,
-    "max_retry_for_commit": 5
+    "@type": "/relayer.chains.debug.config.ChainConfig",
+    "origin_chain": {
+      "@type": "/relayer.chains.tendermint.config.ChainConfig",
+      "key": "testkey",
+      "chain_id": "ibc0",
+      "rpc_addr": "http://localhost:26657",
+      "account_prefix": "cosmos",
+      "gas_adjustment": 1.5,
+      "gas_prices": "0.025stake",
+      "average_block_time_msec": 1000,
+      "max_retry_for_commit": 5
+    }
   },
   "prover": {
-    "@type": "/relayer.provers.mock.config.ProverConfig",
-    "finality_delay": 0
+    "@type": "/relayer.provers.debug.config.ProverConfig",
+    "origin_prover": {
+      "@type": "/relayer.provers.mock.config.ProverConfig",
+      "finality_delay": 0
+    }
   }
 }
diff --git a/tests/cases/tm2eth/configs/template/ibc-1.template.json b/tests/cases/tm2eth/configs/template/ibc-1.template.json
index e74cd0b..7fa62a7 100644
--- a/tests/cases/tm2eth/configs/template/ibc-1.template.json
+++ b/tests/cases/tm2eth/configs/template/ibc-1.template.json
@@ -1,34 +1,40 @@
 {
   "chain": {
-    "@type": "/relayer.chains.ethereum.config.ChainConfig",
-    "chain_id": "ibc1",
-    "eth_chain_id": 2018,
-    "rpc_addr": "http://localhost:8645",
-    "signer": {
-      "@type": "/relayer.signers.hd.SignerConfig",
-      "mnemonic": "math razor capable expose worth grape metal sunset metal sudden usage scheme",
-      "path": "m/44'/60'/0'/0/0"
-    },
-    "ibc_address": "PLACE_HOLDER",
-    "initial_send_checkpoint": 1,
-    "initial_recv_checkpoint": 1,
-    "enable_debug_trace": true,
-    "average_block_time_msec": 1000,
-    "max_retry_for_inclusion": 5,
-    "gas_estimate_rate": {
-      "numerator": 3,
-      "denominator": 2
-    },
-    "max_gas_limit": 10000000,
-    "tx_type": "auto",
-    "blocks_per_event_query": 1000,
-    "abi_paths": [
-      "fixtures/ethereum/ibc1/abis"
-    ],
-    "price_bump": 10
+    "@type": "/relayer.chains.debug.config.ChainConfig",
+    "origin_chain": {
+      "@type": "/relayer.chains.ethereum.config.ChainConfig",
+      "chain_id": "ibc1",
+      "eth_chain_id": 2018,
+      "rpc_addr": "http://localhost:8645",
+      "signer": {
+        "@type": "/relayer.signers.hd.SignerConfig",
+        "mnemonic": "math razor capable expose worth grape metal sunset metal sudden usage scheme",
+        "path": "m/44'/60'/0'/0/0"
+      },
+      "ibc_address": "PLACE_HOLDER",
+      "initial_send_checkpoint": 1,
+      "initial_recv_checkpoint": 1,
+      "enable_debug_trace": true,
+      "average_block_time_msec": 1000,
+      "max_retry_for_inclusion": 5,
+      "gas_estimate_rate": {
+        "numerator": 3,
+        "denominator": 2
+      },
+      "max_gas_limit": 10000000,
+      "tx_type": "auto",
+      "blocks_per_event_query": 1000,
+      "abi_paths": [
+        "fixtures/ethereum/ibc1/abis"
+      ],
+      "price_bump": 10
+    }
   },
   "prover": {
-    "@type": "/relayer.provers.mock.config.ProverConfig",
-    "finality_delay": 0
+    "@type": "/relayer.provers.debug.config.ProverConfig",
+    "origin_prover": {
+      "@type": "/relayer.provers.mock.config.ProverConfig",
+      "finality_delay": 0
+    }
   }
 }
diff --git a/tests/cases/tm2eth/scripts/fixture b/tests/cases/tm2eth/scripts/fixture
index df94e14..fcd8385 100755
--- a/tests/cases/tm2eth/scripts/fixture
+++ b/tests/cases/tm2eth/scripts/fixture
@@ -23,4 +23,4 @@ ${DOCKER} cp ethereum-geth0:/root/addresses ${FIXTURES_DIR}/ethereum/ibc1/addres
 
 # assign the contract address to ChainConfig
 IBC_HANDLER_ADDRESS=`cat ${FIXTURES_DIR}/ethereum/ibc1/addresses/IBCHandler`
-jq ".chain.ibc_address |= \"$IBC_HANDLER_ADDRESS\"" < "$CONF_DIR/template/ibc-1.template.json" > "$CONF_DIR/demo/ibc-1.json"
+jq ".chain.origin_chain.ibc_address |= \"$IBC_HANDLER_ADDRESS\"" < "$CONF_DIR/template/ibc-1.template.json" > "$CONF_DIR/demo/ibc-1.json"
diff --git a/tests/cases/tm2eth/scripts/handshake b/tests/cases/tm2eth/scripts/handshake
index 5ff7521..0b1e05f 100755
--- a/tests/cases/tm2eth/scripts/handshake
+++ b/tests/cases/tm2eth/scripts/handshake
@@ -14,6 +14,12 @@ RLYKEY=testkey
 MOCKAPP_PATH=mockapp-path
 ICS20_PATH=ics20-path
 
+if [ "USE_FAKELOST-$USE_FAKELOST" = "USE_FAKELOST-yes" ]; then
+  export DEBUG_RELAYER_PRUNE_AFTER_BLOCKS_CHAIN_ibc1="10"
+  export DEBUG_RELAYER_PRUNE_AFTER_BLOCKS_PROVER_ibc1="10"
+  export DEBUG_RELAYER_SHFU_WAIT_ibc0="20"
+fi
+
 
 # add a path between chain0 and chain1
 $RLY paths add $CHAINID_ONE $CHAINID_TWO $MOCKAPP_PATH --file=./configs/mockapp-path.json
diff --git a/tests/cases/tm2eth/scripts/test-channel-upgrade b/tests/cases/tm2eth/scripts/test-channel-upgrade
index dbe91e0..960ef5b 100755
--- a/tests/cases/tm2eth/scripts/test-channel-upgrade
+++ b/tests/cases/tm2eth/scripts/test-channel-upgrade
@@ -11,6 +11,12 @@ RELAYER_CONF="$HOME/.yui-relayer"
 RLY_BINARY=${SCRIPT_DIR}/../../../../build/yrly
 RLY="${RLY_BINARY} --debug"
 
+if [ "USE_FAKELOST-$USE_FAKELOST" = "USE_FAKELOST-yes" ]; then
+  export DEBUG_RELAYER_PRUNE_AFTER_BLOCKS_CHAIN_ibc1="10"
+  export DEBUG_RELAYER_PRUNE_AFTER_BLOCKS_PROVER_ibc1="10"
+  export DEBUG_RELAYER_SHFU_WAIT_ibc0="20"
+fi
+
 PATH_NAME=mockapp-path
 
 checkEq() {
diff --git a/tests/cases/tm2eth/scripts/test-ics20-packet-relay b/tests/cases/tm2eth/scripts/test-ics20-packet-relay
index f2b0aa0..cfbd929 100755
--- a/tests/cases/tm2eth/scripts/test-ics20-packet-relay
+++ b/tests/cases/tm2eth/scripts/test-ics20-packet-relay
@@ -9,6 +9,12 @@ RELAYER_CONF="$HOME/.yui-relayer"
 RLY_BINARY=${SCRIPT_DIR}/../../../../build/yrly
 RLY="${RLY_BINARY} --debug"
 
+if [ "USE_FAKELOST-$USE_FAKELOST" = "USE_FAKELOST-yes" ]; then
+  export DEBUG_RELAYER_PRUNE_AFTER_BLOCKS_CHAIN_ibc1="10"
+  export DEBUG_RELAYER_PRUNE_AFTER_BLOCKS_PROVER_ibc1="10"
+  export DEBUG_RELAYER_SHFU_WAIT_ibc0="20"
+fi
+
 PATH_NAME=ics20-path
 
 TM_ADDRESS=$(${RLY} tendermint keys show ibc0 testkey)
@@ -19,8 +25,8 @@ ADDRESSES_DIR_B="${FIXTURES_DIR}/ethereum/ibc1/addresses"
 ERC20_TOKEN_CONTRACT_B=`cat ${ADDRESSES_DIR_B}/ERC20Token`
 ICS20_TRANSFER_CONTRACT_B=`cat ${ADDRESSES_DIR_B}/ICS20Transfer`
 
-MNEMONIC_B=$($RLY config show | jq -r '.chains[] | select(.chain.chain_id == "ibc1").chain.signer.mnemonic')
-RPC_ADDRESS_B=$($RLY config show | jq -r '.chains[] | select(.chain.chain_id == "ibc1").chain.rpc_addr')
+MNEMONIC_B=$($RLY config show | jq -r '.chains[] | select(.chain.origin_chain.chain_id == "ibc1").chain.origin_chain.signer.mnemonic')
+RPC_ADDRESS_B=$($RLY config show | jq -r '.chains[] | select(.chain.origin_chain.chain_id == "ibc1").chain.origin_chain.rpc_addr')
 PORT_A=$($RLY paths list --json | jq -r --arg path $PATH_NAME '.[$path].src."port-id"')
 PORT_B=$($RLY paths list --json | jq -r --arg path $PATH_NAME '.[$path].dst."port-id"')
 CHANNEL_A=$($RLY paths list --json | jq -r --arg path $PATH_NAME '.[$path].src."channel-id"')
diff --git a/tests/cases/tm2eth/scripts/test-mockapp-packet-relay b/tests/cases/tm2eth/scripts/test-mockapp-packet-relay
index 6b25022..dc3f969 100755
--- a/tests/cases/tm2eth/scripts/test-mockapp-packet-relay
+++ b/tests/cases/tm2eth/scripts/test-mockapp-packet-relay
@@ -3,19 +3,26 @@
 set -eux
 
 SCRIPT_DIR=$(cd $(dirname ${BASH_SOURCE:-$0}); pwd)
+source ${SCRIPT_DIR}/utils
 FIXTURES_DIR=${SCRIPT_DIR}/../fixtures
 
 RELAYER_CONF="$HOME/.yui-relayer"
 RLY_BINARY=${SCRIPT_DIR}/../../../../build/yrly
 RLY="${RLY_BINARY} --debug"
 
+if [ "USE_FAKELOST-$USE_FAKELOST" = "USE_FAKELOST-yes" ]; then
+  export DEBUG_RELAYER_PRUNE_AFTER_BLOCKS_CHAIN_ibc1="10"
+  export DEBUG_RELAYER_PRUNE_AFTER_BLOCKS_PROVER_ibc1="10"
+  export DEBUG_RELAYER_SHFU_WAIT_ibc0="20"
+fi
+
 PATH_NAME=mockapp-path
 
 ADDRESSES_DIR_B="${FIXTURES_DIR}/ethereum/ibc1/addresses"
 MOCKAPP_CONTRACT_B=`cat ${ADDRESSES_DIR_B}/AppV1`
 
-MNEMONIC_B=$($RLY config show | jq -r '.chains[] | select(.chain.chain_id == "ibc1").chain.signer.mnemonic')
-RPC_ADDRESS_B=$($RLY config show | jq -r '.chains[] | select(.chain.chain_id == "ibc1").chain.rpc_addr')
+MNEMONIC_B=$($RLY config show | jq -r '.chains[] | select(.chain.origin_chain.chain_id == "ibc1").chain.origin_chain.signer.mnemonic')
+RPC_ADDRESS_B=$($RLY config show | jq -r '.chains[] | select(.chain.origin_chain.chain_id == "ibc1").chain.origin_chain.rpc_addr')
 PORT_B=$($RLY paths list --json | jq -r --arg path $PATH_NAME '.[$path].dst."port-id"')
 CHANNEL_B=$($RLY paths list --json | jq -r --arg path $PATH_NAME '.[$path].dst."channel-id"')
 
@@ -31,18 +38,8 @@ ${RLY} tx acks $PATH_NAME --dst-seqs 1
 sleep ${TX_INTERVAL}
 
 echo "!!! ibc1 -> ibc0 !!!"
-BOB_INDEX=2
-cast send \
-     --rpc-url $RPC_ADDRESS_B \
-     --mnemonic "$MNEMONIC_B" \
-     --mnemonic-index ${BOB_INDEX} \
-     $MOCKAPP_CONTRACT_B \
-     'sendPacket(bytes,string,string,(uint64,uint64),uint64)' \
-     $(cast from-utf8 'mock packet data') \
-     $PORT_B \
-     $CHANNEL_B \
-     '(0,100000)' \
-     $(date -d 1hour +%s%N)
+sendPacketOnEth $PATH_NAME
+
 sleep ${TX_INTERVAL}
 ${RLY} tx relay $PATH_NAME --dst-seqs 1
 sleep ${TX_INTERVAL}
diff --git a/tests/cases/tm2eth/scripts/test-service b/tests/cases/tm2eth/scripts/test-service
new file mode 100755
index 0000000..16fc7b1
--- /dev/null
+++ b/tests/cases/tm2eth/scripts/test-service
@@ -0,0 +1,55 @@
+#!/bin/bash
+
+: <<'END_COMMENT'
+* relay-interval = 20s
+* src-relay-optimize-interval = 30s
+* src-relay-optimize-count = 3
+* dst-relay-optimize-interval = 30s
+* dst-relay-optimize-count = 3
+END_COMMENT
+
+set -eux
+
+SCRIPT_DIR=$(cd $(dirname $0); pwd)
+source $SCRIPT_DIR/utils
+RLY_BIN=${SCRIPT_DIR}/../../../../build/yrly
+RLY="${RLY_BIN} --debug"
+
+if [ "USE_FAKELOST-$USE_FAKELOST" = "USE_FAKELOST-yes" ]; then
+    export DEBUG_RELAYER_PRUNE_AFTER_BLOCKS_CHAIN_ibc1="10"
+    export DEBUG_RELAYER_PRUNE_AFTER_BLOCKS_PROVER_ibc1="10"
+    export DEBUG_RELAYER_SHFU_WAIT_ibc0="20"
+fi
+
+PATH_NAME=mockapp-path
+TM_ADDRESS0=$(${RLY} tendermint keys show ibc0 testkey)
+
+expectUnrelayedCount $PATH_NAME "unrelayed-packets" "src" 0
+expectUnrelayedCount $PATH_NAME "unrelayed-packets" "dst" 0
+expectUnrelayedCount $PATH_NAME "unrelayed-acknowledgements" "src" 0
+expectUnrelayedCount $PATH_NAME "unrelayed-acknowledgements" "dst" 0
+
+${RLY} service start $PATH_NAME --relay-interval 20s --src-relay-optimize-interval 30s --src-relay-optimize-count 3 --dst-relay-optimize-interval 30s --dst-relay-optimize-count 3 &
+RLY_PID=$!
+
+sendPacketOnEth $PATH_NAME
+waitUnrelayedCount $PATH_NAME "unrelayed-packets" "dst" 1 300
+
+docker exec tendermint-chain0-mock sh -c "simd --home /root/data/ibc0 tx --keyring-backend=test --from ${TM_ADDRESS0} --chain-id ibc0 mockapp send mockapp channel-0 'mock packet data' --yes"
+waitUnrelayedCount $PATH_NAME "unrelayed-packets" "src" 1 30
+
+date; echo "Server has started. Both chains already have a message to relay which will be ready after optimize-interval (30s)."
+
+echo "Waiting dst->src packets are relayed. Note that src chain(tendermint) has fast confirmation time"
+waitUnrelayedCount $PATH_NAME "unrelayed-packets" "dst" 0 300
+echo "Waiting src->dst packets are relayed"
+waitUnrelayedCount $PATH_NAME "unrelayed-packets" "src" 0 300
+
+echo "Waiting dst->src ack is relayed. Note that the time of src->dst->src relay and dst->src->dst relay takes nearly same time"
+waitUnrelayedCount $PATH_NAME "unrelayed-acknowledgements" "dst" 0 300
+echo "Waiting src->dst ack is relayed"
+waitUnrelayedCount $PATH_NAME "unrelayed-acknowledgements" "src" 0 300
+
+echo "$0 Finished"
+
+kill $RLY_PID
diff --git a/tests/cases/tm2eth/scripts/utils b/tests/cases/tm2eth/scripts/utils
new file mode 100644
index 0000000..158bc38
--- /dev/null
+++ b/tests/cases/tm2eth/scripts/utils
@@ -0,0 +1,58 @@
+expectUnrelayedCount() {
+    local PATH_NAME=$1
+    local query_type=$2
+    local filter=".$3 | length"
+    local expect_count=$4
+    unrelayed_count=$(${RLY} query ${query_type} $PATH_NAME | jq "${filter}")
+    if [ "$unrelayed_count" -ne "${expect_count}" ]; then
+        echo "$query_type: $unrelayed_count"
+        test -z "$RLY_PID" || kill $RLY_PID
+        exit 1
+    fi
+}
+
+waitUnrelayedCount() {
+    local PATH_NAME=$1
+    local query_type=$2
+    local chain=$3
+    local filter=".$chain | length"
+    local expect_count=$4
+    timeout=$(( $(date +%s) + $5 ))
+    unrelayed_count=999
+    until [ "$unrelayed_count" -eq "$expect_count" ]; do
+        unrelayed_count=$(${RLY} query ${query_type} $PATH_NAME | jq "${filter}")
+        date
+        echo "$0 ${query_type} is $unrelayed_count"
+        t=$(date +%s)
+        if [ $t -gt $timeout ]; then
+            echo "TIMEOUT waitUnrelayedCount: $query_type $chain expect $expect_count but $unrelayed_count"
+            exit 1
+        fi
+        sleep 10
+    done
+}
+
+sendPacketOnEth() {
+    local PATH_NAME=$1
+    local MOCKAPP_CONTRACT_B=$(cat $(dirname $0)/../fixtures/ethereum/ibc1/addresses/AppV1)
+    local RPC_ADDRESS_B=$($RLY config show | jq -r '.chains[] | select(.chain.origin_chain.chain_id == "ibc1").chain.origin_chain.rpc_addr')
+    local PORT_B=$($RLY paths list --json | jq -r --arg path $PATH_NAME '.[$path].dst."port-id"')
+    local CHANNEL_B=$($RLY paths list --json | jq -r --arg path $PATH_NAME '.[$path].dst."channel-id"')
+
+    local MNEMONIC_B=$($RLY config show | jq -r '.chains[] | select(.chain.origin_chain.chain_id == "ibc1").chain.origin_chain.signer.mnemonic')
+    local SENDER=$(cast wallet address --mnemonic "$MNEMONIC_B" --mnemonic-index 2)
+
+    cast balance $SENDER --rpc-url $RPC_ADDRESS_B
+    cast nonce $SENDER --rpc-url $RPC_ADDRESS_B
+    cast send \
+     --rpc-url $RPC_ADDRESS_B \
+     --mnemonic "$MNEMONIC_B" --mnemonic-index 2 \
+     --legacy \
+     $MOCKAPP_CONTRACT_B \
+     'sendPacket(bytes,string,string,(uint64,uint64),uint64)' \
+     $(cast from-utf8 'mock packet data') \
+     $PORT_B \
+     $CHANNEL_B \
+     '(0,100000)' \
+     $(date -d 1hour +%s%N) || exit 1
+}
diff --git a/tests/chains/ethereum/Makefile b/tests/chains/ethereum/Makefile
index 73f0864..5a07047 100644
--- a/tests/chains/ethereum/Makefile
+++ b/tests/chains/ethereum/Makefile
@@ -33,3 +33,6 @@ down-scaffold:
 docker-commit:
 	$(SCRIPT_DIR)/docker/commitImage.sh  $(DOCKER_REPO) $(DOCKER_TAG) ethereum-geth0 ethereum-geth0-scaffold $(CHAIN_ID0)
 	$(SCRIPT_DIR)/docker/commitImage.sh  $(DOCKER_REPO) $(DOCKER_TAG) ethereum-geth1 ethereum-geth1-scaffold $(CHAIN_ID1)
+
+clean:
+	rm -rf contracts/addresses contracts/artifacts contracts/cache contracts/.openzeppelin