--- openjdk/Inet6AddressImpl.c
+++ openjdk/Inet6AddressImpl.c
@@ -360,6 +360,13 @@

 #ifdef AF_INET6

+#ifdef __MINGW32__
+typedef struct icmpv6_echo_reply_lh {
+  IPV6_ADDRESS_EX Address;
+  ULONG           Status;
+  unsigned int    RoundTripTime;
+} ICMPV6_ECHO_REPLY, *PICMPV6_ECHO_REPLY;
+#endif

 /**
   * ping implementation.