vue for循环报错 Duplicate keys detected: 'eth0'. This may cause an update error.

在axios 中使用for循环 ,报错Duplicate keys detected: 'eth0'. This may cause an update error.(检测到重复的密钥：“eth0”。这可能会导致更新错误。)
这一步是加载获取参数. 等我设置完参数.重新调用请求一次的时候,就报错了. 如果鞋子dom里面可以加Key 但在script里面怎么办?

 this.$axios
        .post("/api/config/net_priority_getinfo")
        .then((res) => {
          let data = res.data;
          this.net_priority_getinfo = res.data.netPropertyList;
          console.log(this.net_priority_getinfo);
          var interface1 = data.netPropertyList[0].interface;
          if (interface1 == "eth0") {
            this.youxian = "有线";
          } else if (interface1 == "wlan0") {
            this.youxian = "无线";
          } else if (interface1 == "rmnet_usb0") {
            this.youxian = "5G模块";
          }
          var json1 = { value: "eth0", label: "有线" };
          var json2 = { value: "wlan0", label: "无线" };
          var json3 = { value: "rmnet_usb0", label: "5G模块" };
          for (let i = 0; i < data.num; i++) {
            // console.log(i);
            if (data.netPropertyList[i].interface == "eth0") {
              this.netPriority.push(json1);
            } else if (data.netPropertyList[i].interface == "wlan0") {
              this.netPriority.push(json2);
            } else if (data.netPropertyList[i].interface == "rmnet_usb0") {
              this.netPriority.push(json3);
            }
            // console.log(this.netPriority);
          }
        })
        .catch(() => {
          // console.log(error);
          this.timer = setTimeout(() => {
            this.youxianji();
          }, 60000);
        });

v-for循环绑定的 key要是唯一的值

v-for="(item,index) in net_priority_getinfo " :key="index"

key值重复了，在你的视图里面把key值找个字符串加上index下标拼接一下就行了，比如：key="item.value+index+'_'"