diff --git a/src/agent/src/netlink.rs b/src/agent/src/netlink.rs
index 262aaadd73..4d6a26e140 100644
--- a/src/agent/src/netlink.rs
+++ b/src/agent/src/netlink.rs
@@ -955,7 +955,7 @@ mod tests {
             .expect("prepare: failed to delete neigh");
     }
 
-    fn prepare_env_for_test_add_one_arp_neighbor(dummy_name: &str, ip: &str, mac: &str) {
+    fn prepare_env_for_test_add_one_arp_neighbor(dummy_name: &str, ip: &str) {
         clean_env_for_test_add_one_arp_neighbor(dummy_name, ip);
         // modprobe dummy
         Command::new("modprobe")
@@ -969,12 +969,6 @@ mod tests {
             .output()
             .expect("failed to add dummy interface");
 
-        // ip link set dummy address 6a:92:3a:59:70:aa
-        Command::new("ip")
-            .args(&["link", "set", dummy_name, "address", mac])
-            .output()
-            .expect("failed to add dummy interface");
-
         // ip addr add 192.168.0.2/16 dev dummy
         Command::new("ip")
             .args(&["addr", "add", "192.168.0.2/16", "dev", dummy_name])
@@ -996,7 +990,7 @@ mod tests {
         let to_ip = "169.254.1.1";
         let dummy_name = "dummy_for_arp";
 
-        prepare_env_for_test_add_one_arp_neighbor(dummy_name, to_ip, mac);
+        prepare_env_for_test_add_one_arp_neighbor(dummy_name, to_ip);
 
         let mut ip_address = IPAddress::new();
         ip_address.set_address(to_ip.to_string());