From 4c1dc2d60b1a68cf0839317ef11f4944e3df1f6d Mon Sep 17 00:00:00 2001
From: Our Air Quality <info@ourairquality.org>
Date: Mon, 11 Dec 2017 21:24:23 +1100
Subject: [PATCH] lwip: enable mdns dns queries.

---
 lwip/include/lwipopts.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lwip/include/lwipopts.h b/lwip/include/lwipopts.h
index 30282b5..d2c7323 100644
--- a/lwip/include/lwipopts.h
+++ b/lwip/include/lwipopts.h
@@ -297,6 +297,12 @@
 #define DNS_MAX_NAME_LENGTH 128
 #endif
 
+/** Set this to 1 to enable querying ".local" names via mDNS
+ *  using a One-Shot Multicast DNS Query */
+#ifndef LWIP_DNS_SUPPORT_MDNS_QUERIES
+#define LWIP_DNS_SUPPORT_MDNS_QUERIES  1
+#endif
+
 /*
    ---------------------------------
    ---------- UDP options ----------