[PATCH 1/2] Cygwin: getifaddrs: fix address family for IPv6 netmasks

[PATCH 1/2] Cygwin: getifaddrs: fix address family for IPv6 netmasks

[Ken Brown]

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Patch attached.

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From 49ff12b47d9d71960fd7b39846b302b8031affa4 Mon Sep 17 00:00:00 2001
From: Ken Brown <kbrown@cornell.edu>
Date: Mon, 26 Jul 2021 08:59:09 -0400
Subject: [PATCH 1/2] Cygwin: getifaddrs: fix address family for IPv6 netmasks

The code in net.cc:get_ifs that sets the netmask omitted setting the
address family in the IPv6 case.  Fix this by setting it to AF_INET6.

Partially addresses: https://cygwin.com/pipermail/cygwin/2021-July/248970.html
---
 winsup/cygwin/net.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/winsup/cygwin/net.cc b/winsup/cygwin/net.cc
index cec0a70cc..67dd7fc04 100644
--- a/winsup/cygwin/net.cc
+++ b/winsup/cygwin/net.cc
@@ -1869,6 +1869,7 @@ get_ifs (ULONG family)
 		    if (prefix < 32)
 		      if_sin6->sin6_addr.s6_addr32[cnt] <<= 32 - prefix;
 		  }
+		if_sin6->sin6_family = AF_INET6;
 		break;
 	      }
 	    ifp->ifa_ifa.ifa_netmask = (struct sockaddr *) &ifp->ifa_netmask;
-- 
2.32.0