deps: ignore loopback interface in c-ares on Windows

Author: kairosci

deps/cares/src/lib/ares_sysconfig_win.c

@@ -54,6 +54,10 @@
 
 #include "ares_inet_net_pton.h"
 
+#ifndef IF_TYPE_SOFTWARE_LOOPBACK
+#define IF_TYPE_SOFTWARE_LOOPBACK 24
+#endif
+
 #if defined(USE_WINSOCK)
 
 #  define WIN_NS_9X     "System\\CurrentControlSet\\Services\\VxD\\MSTCP"
@@ -368,6 +372,9 @@ static ares_bool_t get_DNS_Windows(char **outptr)
     if (ipaaEntry->OperStatus != IfOperStatusUp) {
       continue;
     }
+    if (ipaaEntry->IfType == IF_TYPE_SOFTWARE_LOOPBACK) {
+      continue;
+    }
 
     /* For each interface, find any associated DNS servers as IPv4 or IPv6
      * addresses.  For each found address, find the best route to that DNS