diff --git a/openmptcprouter/files/bin/omr-test-speed b/openmptcprouter/files/bin/omr-test-speed
index fb433b625..b01279773 100755
--- a/openmptcprouter/files/bin/omr-test-speed
+++ b/openmptcprouter/files/bin/omr-test-speed
@@ -29,6 +29,6 @@ else
 	domain=$(echo $HOST | awk -F/ '{print $3}')
 	hostip=$(dig +nocmd +noall +answer A $domain | grep -v CNAME | awk '{print $5}' | tr -d "\n")
 	ipset add ss_rules_dst_bypass_all $hostip
-	curl -4 $HOST >/dev/null || echo
+	curl -4 --interface $INTERFACE $HOST >/dev/null || echo
 	ipset del ss_rules_dst_bypass_all $hostip
 fi