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-rw-r--r--node/Constants.hpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/node/Constants.hpp b/node/Constants.hpp
index 82d25459..c9202fc0 100644
--- a/node/Constants.hpp
+++ b/node/Constants.hpp
@@ -443,4 +443,9 @@
*/
#define ZT_TEST_NETWORK_ID 0xffffffffffffffffULL
+/**
+ * Enable support for legacy <1.0.0 multicast peers (P5)
+ */
+#define ZT_SUPPORT_LEGACY_MULTICAST 1
+
#endif