diff --git a/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh b/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh
index a40c0e9bd023..eef5cbf6eecc 100755
--- a/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh
+++ b/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh
@@ -73,25 +73,19 @@ setup_v6() {
 	# namespaces. veth0 is veth-router, veth1 is veth-host.
 	# first, set up the inteface's link to the namespace
 	# then, set the interface "up"
-	ip -6 -netns ${ROUTER_NS_V6} link add name ${ROUTER_INTF} \
-		type veth peer name ${HOST_INTF}
-
-	ip -6 -netns ${ROUTER_NS_V6} link set dev ${ROUTER_INTF} up
-	ip -6 -netns ${ROUTER_NS_V6} link set dev ${HOST_INTF} netns \
-		${HOST_NS_V6}
+	ip -n ${ROUTER_NS_V6} link add name ${ROUTER_INTF} \
+		type veth peer name ${HOST_INTF} netns ${HOST_NS_V6}
 
-	ip -6 -netns ${HOST_NS_V6} link set dev ${HOST_INTF} up
-	ip -6 -netns ${ROUTER_NS_V6} addr add \
-		${ROUTER_ADDR_V6}/${PREFIX_WIDTH_V6} dev ${ROUTER_INTF} nodad
+	# Add tc rule to filter out host na message
+	tc -n ${ROUTER_NS_V6} qdisc add dev ${ROUTER_INTF} clsact
+	tc -n ${ROUTER_NS_V6} filter add dev ${ROUTER_INTF} \
+		ingress protocol ipv6 pref 1 handle 101 \
+		flower src_ip ${HOST_ADDR_V6} ip_proto icmpv6 type 136 skip_hw action pass
 
 	HOST_CONF=net.ipv6.conf.${HOST_INTF}
 	ip netns exec ${HOST_NS_V6} sysctl -qw ${HOST_CONF}.ndisc_notify=1
 	ip netns exec ${HOST_NS_V6} sysctl -qw ${HOST_CONF}.disable_ipv6=0
-	ip -6 -netns ${HOST_NS_V6} addr add ${HOST_ADDR_V6}/${PREFIX_WIDTH_V6} \
-		dev ${HOST_INTF}
-
 	ROUTER_CONF=net.ipv6.conf.${ROUTER_INTF}
-
 	ip netns exec ${ROUTER_NS_V6} sysctl -w \
 		${ROUTER_CONF}.forwarding=1 >/dev/null 2>&1
 	ip netns exec ${ROUTER_NS_V6} sysctl -w \
@@ -99,6 +93,13 @@ setup_v6() {
 	ip netns exec ${ROUTER_NS_V6} sysctl -w \
 		${ROUTER_CONF}.accept_untracked_na=${accept_untracked_na} \
 		>/dev/null 2>&1
+
+	ip -n ${ROUTER_NS_V6} link set dev ${ROUTER_INTF} up
+	ip -n ${HOST_NS_V6} link set dev ${HOST_INTF} up
+	ip -n ${ROUTER_NS_V6} addr add ${ROUTER_ADDR_V6}/${PREFIX_WIDTH_V6} \
+		dev ${ROUTER_INTF} nodad
+	ip -n ${HOST_NS_V6} addr add ${HOST_ADDR_V6}/${PREFIX_WIDTH_V6} \
+		dev ${HOST_INTF}
 	set +e
 }
 
@@ -162,26 +163,6 @@ arp_test_gratuitous_combinations() {
 	arp_test_gratuitous 2 1
 }
 
-cleanup_tcpdump() {
-	set -e
-	[[ ! -z  ${tcpdump_stdout} ]] && rm -f ${tcpdump_stdout}
-	[[ ! -z  ${tcpdump_stderr} ]] && rm -f ${tcpdump_stderr}
-	tcpdump_stdout=
-	tcpdump_stderr=
-	set +e
-}
-
-start_tcpdump() {
-	set -e
-	tcpdump_stdout=`mktemp`
-	tcpdump_stderr=`mktemp`
-	ip netns exec ${ROUTER_NS_V6} timeout 15s \
-		tcpdump --immediate-mode -tpni ${ROUTER_INTF} -c 1 \
-		"icmp6 && icmp6[0] == 136 && src ${HOST_ADDR_V6}" \
-		> ${tcpdump_stdout} 2> /dev/null
-	set +e
-}
-
 verify_ndisc() {
 	local accept_untracked_na=$1
 	local same_subnet=$2
@@ -222,8 +203,9 @@ ndisc_test_untracked_advertisements() {
 			HOST_ADDR_V6=2001:db8:abcd:0012::3
 		fi
 	fi
-	setup_v6 $1 $2
-	start_tcpdump
+	setup_v6 $1
+	slowwait_for_counter 15 1 \
+		tc_rule_handle_stats_get "dev ${ROUTER_INTF} ingress" 101 ".packets" "-n ${ROUTER_NS_V6}"
 
 	if verify_ndisc $1 $2; then
 		printf "    TEST: %-60s  [ OK ]\n" "${test_msg[*]}"
@@ -231,7 +213,6 @@ ndisc_test_untracked_advertisements() {
 		printf "    TEST: %-60s  [FAIL]\n" "${test_msg[*]}"
 	fi
 
-	cleanup_tcpdump
 	cleanup_v6
 	set +e
 }
diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index e579c2e0c462..746161400a7c 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -38,32 +38,6 @@ fi
 
 source "$net_forwarding_dir/../lib.sh"
 
-# timeout in seconds
-slowwait()
-{
-	local timeout=$1; shift
-
-	local start_time="$(date -u +%s)"
-	while true
-	do
-		local out
-		out=$("$@")
-		local ret=$?
-		if ((!ret)); then
-			echo -n "$out"
-			return 0
-		fi
-
-		local current_time="$(date -u +%s)"
-		if ((current_time - start_time > timeout)); then
-			echo -n "$out"
-			return 1
-		fi
-
-		sleep 0.1
-	done
-}
-
 ##############################################################################
 # Sanity checks
 
@@ -487,33 +461,6 @@ wait_for_trap()
 	"$@" | grep -q trap
 }
 
-until_counter_is()
-{
-	local expr=$1; shift
-	local current=$("$@")
-
-	echo $((current))
-	((current $expr))
-}
-
-busywait_for_counter()
-{
-	local timeout=$1; shift
-	local delta=$1; shift
-
-	local base=$("$@")
-	busywait "$timeout" until_counter_is ">= $((base + delta))" "$@"
-}
-
-slowwait_for_counter()
-{
-	local timeout=$1; shift
-	local delta=$1; shift
-
-	local base=$("$@")
-	slowwait "$timeout" until_counter_is ">= $((base + delta))" "$@"
-}
-
 setup_wait_dev()
 {
 	local dev=$1; shift
@@ -819,29 +766,6 @@ link_stats_rx_errors_get()
 	link_stats_get $1 rx errors
 }
 
-tc_rule_stats_get()
-{
-	local dev=$1; shift
-	local pref=$1; shift
-	local dir=$1; shift
-	local selector=${1:-.packets}; shift
-
-	tc -j -s filter show dev $dev ${dir:-ingress} pref $pref \
-	    | jq ".[1].options.actions[].stats$selector"
-}
-
-tc_rule_handle_stats_get()
-{
-	local id=$1; shift
-	local handle=$1; shift
-	local selector=${1:-.packets}; shift
-	local netns=${1:-""}; shift
-
-	tc $netns -j -s filter show $id \
-	    | jq ".[] | select(.options.handle == $handle) | \
-		  .options.actions[0].stats$selector"
-}
-
 ethtool_stats_get()
 {
 	local dev=$1; shift
diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh
index f9fe182dfbd4..90410b8f3d32 100644
--- a/tools/testing/selftests/net/lib.sh
+++ b/tools/testing/selftests/net/lib.sh
@@ -37,6 +37,59 @@ busywait()
 	done
 }
 
+# timeout in seconds
+slowwait()
+{
+	local timeout=$1; shift
+
+	local start_time="$(date -u +%s)"
+	while true
+	do
+		local out
+		out=$("$@")
+		local ret=$?
+		if ((!ret)); then
+			echo -n "$out"
+			return 0
+		fi
+
+		local current_time="$(date -u +%s)"
+		if ((current_time - start_time > timeout)); then
+			echo -n "$out"
+			return 1
+		fi
+
+		sleep 0.1
+	done
+}
+
+until_counter_is()
+{
+	local expr=$1; shift
+	local current=$("$@")
+
+	echo $((current))
+	((current $expr))
+}
+
+busywait_for_counter()
+{
+	local timeout=$1; shift
+	local delta=$1; shift
+
+	local base=$("$@")
+	busywait "$timeout" until_counter_is ">= $((base + delta))" "$@"
+}
+
+slowwait_for_counter()
+{
+	local timeout=$1; shift
+	local delta=$1; shift
+
+	local base=$("$@")
+	slowwait "$timeout" until_counter_is ">= $((base + delta))" "$@"
+}
+
 cleanup_ns()
 {
 	local ns=""
@@ -94,3 +147,26 @@ setup_ns()
 	done
 	NS_LIST="$NS_LIST $ns_list"
 }
+
+tc_rule_stats_get()
+{
+	local dev=$1; shift
+	local pref=$1; shift
+	local dir=$1; shift
+	local selector=${1:-.packets}; shift
+
+	tc -j -s filter show dev $dev ${dir:-ingress} pref $pref \
+	    | jq ".[1].options.actions[].stats$selector"
+}
+
+tc_rule_handle_stats_get()
+{
+	local id=$1; shift
+	local handle=$1; shift
+	local selector=${1:-.packets}; shift
+	local netns=${1:-""}; shift
+
+	tc $netns -j -s filter show $id \
+	    | jq ".[] | select(.options.handle == $handle) | \
+		  .options.actions[0].stats$selector"
+}
