Introduce FEATURE_PREFER_IPV4_ADDRESS. If selected, we have:

function                                             old     new   delta
str2sockaddr                                         328     344     +16

1 files changed, 15 insertions, 0 deletions

diff --git a/networking/Config.in b/networking/Config.in
index b5b4597c4..b50aacf9f 100644
--- a/networking/Config.in
+++ b/networking/Config.in
@@ -12,6 +12,21 @@ config FEATURE_IPV6
 	  Enable IPv6 support in busybox.
 	  This adds IPv6 support in the networking applets.
 
+config FEATURE_PREFER_IPV4_ADDRESS
+	bool "Preferentially use IPv4 addresses from DNS queries"
+	default y
+	depends on FEATURE_IPV6
+	help
+	  Use IPv4 address of network host if it has one.
+
+	  If this option is off, the first returned address will be used.
+	  This may cause problems when your DNS server is IPv6-capable and
+	  is returning IPv6 host addresses too. If IPv6 address
+	  precedes IPv4 one in DNS reply, busybox network applets
+	  (e.g. wget) will use IPv6 address. On an IPv6-incapable host
+	  or network applets will fail to connect to the host
+	  using IPv6 address.
+
 config VERBOSE_RESOLUTION_ERRORS
 	bool "Verbose resolution errors"
 	default n