unit_test: switch icmp test server to taobao

components/esp_eth/test/test_emac.c

@@ -343,12 +343,13 @@ TEST_CASE("esp32 ethernet icmp test", "[ethernet][test_env=UT_T2_Ethernet]")
     memset(&hint, 0, sizeof(hint));
     memset(&target_addr, 0, sizeof(target_addr));
     /* convert URL to IP */
-    TEST_ASSERT(getaddrinfo("www.baidu.com", NULL, &hint, &res) == 0);
+    TEST_ASSERT(getaddrinfo("www.espressif.com", NULL, &hint, &res) == 0);
     struct in_addr addr4 = ((struct sockaddr_in *)(res->ai_addr))->sin_addr;
     inet_addr_to_ip4addr(ip_2_ip4(&target_addr), &addr4);
     freeaddrinfo(res);
 
     esp_ping_config_t ping_config = ESP_PING_DEFAULT_CONFIG();
+    ping_config.timeout_ms = 2000;
     ping_config.target_addr = target_addr;
     ping_config.count = 0; // ping in infinite mode
     /* set callback functions */