PR: 2005
Submitted by: steve@openssl.org
Some systems have broken IPv6 headers and/or implementations. If
OPENSSL_USE_IPV6 is set to 0 IPv6 is not used, if it is set to 1 it is used
and if undefined an attempt is made to detect at compile time by checking
if AF_INET6 is set and excluding known problem platforms.
diff --git a/e_os.h b/e_os.h
index 3fbfe8e..0f4b799 100644
--- a/e_os.h
+++ b/e_os.h
@@ -624,6 +624,18 @@
# define INVALID_SOCKET (-1)
# endif /* INVALID_SOCKET */
# endif
+
+/* Some IPv6 implementations are broken, disable them in known bad
+ * versions.
+ */
+# if !defined(OPENSSL_USE_IPV6)
+# if defined(AF_INET6) && !defined(OPENSSL_SYS_BEOS_BONE) && !defined(NETWARE_CLIB)
+# define OPENSSL_USE_IPV6 1
+# else
+# define OPENSSL_USE_IPV6 0
+# endif
+# endif
+
#endif
#if defined(__ultrix)
