diff --git a/src/lib/ares_getaddrinfo.c b/src/lib/ares_getaddrinfo.c
index 0a0225a..4c3668e 100644
--- a/src/lib/ares_getaddrinfo.c
+++ b/src/lib/ares_getaddrinfo.c
@@ -57,6 +57,80 @@
 #  include "ares_platform.h"
 #endif
 
+#if OHOS_DNS_PROXY_BY_NETSYS
+#include <dlfcn.h>
+#include <stdio.h>
+
+#if DNS_CONFIG_DEBUG
+#ifndef DNS_CONFIG_PRINT
+#define DNS_CONFIG_PRINT(fmt, ...) printf("DNS " fmt "\n", ##__VA_ARGS__)
+#endif
+#else
+#define DNS_CONFIG_PRINT(fmt, ...)
+#endif
+
+#define DNS_SO_PATH "libnetsys_client.z.so"
+#define OHOS_JUDGE_IPV6_FUNC_NAME "NetSysIsIpv6Enable"
+typedef int (*JudgeIpv6)(uint16_t netId);
+
+static void *open_dns_lib(void)
+{
+  static void *lib = NULL;
+  if (lib != NULL) {
+    return lib;
+  }
+
+  lib = dlopen(DNS_SO_PATH, RTLD_LAZY);
+  if (lib == NULL) {
+    DNS_CONFIG_PRINT("%s: dlopen %s failed: %s", __func__, DNS_SO_PATH, dlerror());
+    return NULL;
+  }
+  return lib;
+}
+
+static void *load_from_dns_lib(const char *symbol)
+{
+  void *lib_handle = open_dns_lib();
+  if (lib_handle == NULL) {
+    return NULL;
+  }
+
+  void *sym_addr = dlsym(lib_handle, symbol);
+  if (sym_addr == NULL) {
+    DNS_CONFIG_PRINT("%s: loading symbol %s with dlsym failed: %s", __func__, symbol, dlerror());
+  }
+  return sym_addr;
+}
+
+static JudgeIpv6 load_ipv6_judger(void)
+{
+  static JudgeIpv6 ipv6_judger = NULL;
+  if (ipv6_judger != NULL) {
+    return ipv6_judger;
+  }
+  ipv6_judger = (JudgeIpv6)load_from_dns_lib(OHOS_JUDGE_IPV6_FUNC_NAME);
+  return ipv6_judger;
+}
+#endif
+
+static int IsIpv6Enable()
+{
+  int ret = 0;
+#if OHOS_DNS_PROXY_BY_NETSYS
+  JudgeIpv6 func = load_ipv6_judger();
+  if (!func) {
+    return 0;
+  }
+
+  uint16_t netid = 0;
+  ret = func(netid);
+  if (ret < 0) {
+    return 0;
+  }
+#endif
+  return ret;
+}
+
 struct host_query
 {
   ares_channel channel;
@@ -744,13 +818,18 @@ static int next_dns_lookup(struct host_query *hquery)
             ares_query(hquery->channel, s, C_IN, T_A, host_callback, hquery);
             break;
           case AF_INET6:
-            hquery->remaining += 1;
-            ares_query(hquery->channel, s, C_IN, T_AAAA, host_callback, hquery);
+            if (IsIpv6Enable()) {
+              hquery->remaining += 1;
+              ares_query(hquery->channel, s, C_IN, T_AAAA, host_callback, hquery);
+            }
             break;
           case AF_UNSPEC:
-            hquery->remaining += 2;
+            hquery->remaining += 1;
             ares_query(hquery->channel, s, C_IN, T_A, host_callback, hquery);
-            ares_query(hquery->channel, s, C_IN, T_AAAA, host_callback, hquery);
+            if (IsIpv6Enable()) {
+              hquery->remaining += 1;
+              ares_query(hquery->channel, s, C_IN, T_AAAA, host_callback, hquery);
+            }
             break;
           default: break;
         }