!993 musl支持IPv6

Merge pull request !993 from 徐杰/pr_yafei_ipv6_0720

musl_template.gni

@@ -158,7 +158,7 @@ template("musl_libs") {
       defines += [
         "OHOS_DNS_PROXY_BY_NETSYS=1",
         "OHOS_PERMISSION_INTERNET=1",
-        "STANDARD_SYSTEM",
+        "OHOS_DISABLE_IPV6=0",
       ]
     }
 

porting/linux/user/src/network/lookup_name.c

@@ -166,10 +166,10 @@ static int name_from_dns(struct address buf[static MAXADDRS], char canon[static
 		{ .af = AF_INET, .rr = RR_AAAA },
 	};
 
-#ifdef STANDARD_SYSTEM
-	for (i=0; i<1; i++) {
+#if OHOS_DISABLE_IPV6
+    for (i = 0; i < 1; i++) {
 #else
-	for (i=0; i<2; i++) {
+	for (i = 0; i < 2; i++) {
 #endif
 		if (family != afrr[i].af) {
 			qlens[nq] = __res_mkquery(0, name, 1, afrr[i].rr,