Only listen on the given interfaces.

Stop being a public dns forwarder on our external interfaces.

bug:7530468
Change-Id: Ic94cd66e66371de4fcc54f53b9f267f6611804b8
diff --git a/src/dnsmasq.h b/src/dnsmasq.h
index e2dedc6..c4fda28 100755
--- a/src/dnsmasq.h
+++ b/src/dnsmasq.h
@@ -781,6 +781,7 @@
 int reload_servers(char *fname);
 #ifdef __ANDROID__
 int set_servers(const char *servers);
+void set_interfaces(const char *interfaces);
 #endif
 void check_servers(void);
 int enumerate_interfaces();