libc/netdb: Change the default max number of host IP to 2 if both IPv4 and Ipv6 enable

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I02614cb34647eaa03b476a6755d0667dc8392036

libs/libc/netdb/Kconfig

@@ -18,6 +18,18 @@ config LIBC_GAISTRERROR
 		of memory. If this option is not selected, gai_strerror() will still exist in
 		the build but it will not decode error values.
 
+config NETDB_BUFSIZE
+	int "gethostbyname/gethostbyaddr buffer size"
+	default 128
+
+config NETDB_MAX_IPADDR
+	int "Max number of IP addresses per host"
+	default 2 if NET_IPv4 && NET_IPv6
+	default 1
+	---help---
+		This setting determines the maximum number of IP addresses
+		stored to the name resolution cache for a given host.
+
 menuconfig NETDB_HOSTFILE
 	bool "Network host file support"
 	default n
@@ -36,10 +48,6 @@ config NETDB_MAX_ALTNAMES
 	int "Max number of alternate host names"
 	default 4
 
-config NETDB_BUFSIZE
-	int "gethostname() buffer size"
-	default 128
-
 endif # NETDB_HOSTFILE
 
 menuconfig NETDB_DNSCLIENT
@@ -101,13 +109,6 @@ config NETDB_DNSCLIENT_MAXRESPONSE
 		can be received by the DNS resolver.  The default is 96 but may
 		need to be larger on enterprise networks (perhaps 176).
 
-config NETDB_DNSCLIENT_MAXIP
-	int "Max number of IP addresses per host"
-	default 1
-	---help---
-		This setting determines the maximum number of IP addresses
-		stored to the name resolution cache for a given host.
-
 config NETDB_DNSCLIENT_RECV_TIMEOUT
 	int "DNS receive timeout"
 	default 30