From bb7b9411e1b4f95418bed7b35035186e261063a6 Mon Sep 17 00:00:00 2001
From: Jeremy Harris <jgh146exb@wizmail.org>
Date: Sun, 9 Feb 2014 21:03:27 +0000
Subject: [PATCH] Fix build on systems having ipv6 but lacking an IPV6_TCLASS
 define (GNU Hurd).  Bug 1441 By Samuel Thibault

---
 src/src/ip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/src/ip.c b/src/src/ip.c
index ae629b051..d6e4e7ad8 100644
--- a/src/src/ip.c
+++ b/src/src/ip.c
@@ -464,7 +464,7 @@ if (af == AF_INET)
   *level = IPPROTO_IP;
   *optname = IP_TOS;
   }
-#if HAVE_IPV6
+#if HAVE_IPV6 && defined(IPV6_TCLASS)
 else if (af == AF_INET6)
   {
   *level = IPPROTO_IPV6;
-- 
2.25.1