Fix build on systems having ipv6 but lacking an IPV6_TCLASS define (GNU Hurd). Bug...

[exim.git] / src / src / ip.c

diff --git a/src/src/ip.c b/src/src/ip.c
index ae629b0513d47a577e407f218f954630c43e9fff..d6e4e7ad850ca95e2a97049580598e1a16e6bd2f 100644 (file)
--- 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;