zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/dns-ipv4-addr.d b/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/dns-ipv4-addr.d
new file mode 100644
index 0000000..597b858
--- /dev/null
+++ b/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/dns-ipv4-addr.d
@@ -0,0 +1,11 @@
+Long: dns-ipv4-addr
+Arg: <address>
+Help: IPv4 address to use for DNS requests
+Protocols: DNS
+See-also: dns-interface dns-ipv6-addr
+Added: 7.33.0
+Requires: c-ares
+---
+Tell curl to bind to <ip-address> when making IPv4 DNS requests, so that
+the DNS requests originate from this address. The argument should be a
+single IPv4 address.