From deb3a2c51f32e0d2741be11a492e727129f770e2 Mon Sep 17 00:00:00 2001
From: Nate Karstens <nate.karstens@garmin.com>
Date: Wed, 28 Jun 2017 17:30:00 -0500
Subject: [PATCH 3/8] Track interface socket family

Tracks the socket family associated with the interface.

Upstream-Status: Submitted [dts@apple.com]

Signed-off-by: Nate Karstens <nate.karstens@garmin.com>
Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
---
 mDNSPosix/mDNSPosix.c | 1 +
 mDNSPosix/mDNSPosix.h | 2 ++
 2 files changed, 3 insertions(+)

--- a/mDNSPosix/mDNSPosix.c
+++ b/mDNSPosix/mDNSPosix.c
@@ -1415,6 +1415,7 @@ mDNSlocal int SetupOneInterface(mDNS *co
         // Set up the extra fields in PosixNetworkInterface.
         assert(intf->intfName != NULL);         // intf->intfName already set up above
         intf->index                = intfIndex;
+        intf->sa_family            = intfAddr->sa_family;
         intf->multicastSocket4     = -1;
 #if HAVE_IPV6
         intf->multicastSocket6     = -1;
--- a/mDNSPosix/mDNSPosix.h
+++ b/mDNSPosix/mDNSPosix.h
@@ -19,6 +19,7 @@
 #define __mDNSPlatformPosix_h
 
 #include <signal.h>
+#include <sys/socket.h>
 #include <sys/time.h>
 
 #ifdef  __cplusplus
@@ -40,6 +41,7 @@ struct PosixNetworkInterface
     char *                  intfName;
     PosixNetworkInterface * aliasIntf;
     int index;
+    sa_family_t sa_family;
     int multicastSocket4;
 #if HAVE_IPV6
     int multicastSocket6;