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-rw-r--r--CSharp/Ivy/IvyPPC/IvyWatcher.cs2
1 files changed, 1 insertions, 1 deletions
diff --git a/CSharp/Ivy/IvyPPC/IvyWatcher.cs b/CSharp/Ivy/IvyPPC/IvyWatcher.cs
index 092de81..5a3afc8 100644
--- a/CSharp/Ivy/IvyPPC/IvyWatcher.cs
+++ b/CSharp/Ivy/IvyPPC/IvyWatcher.cs
@@ -63,7 +63,7 @@ namespace IvyBus
byte[] addr = group.GetAddressBytes();
if ((addr[0] & 0xf0) == 0xe0)
{
- broadcast.SetSocketOption(SocketOptionLevel.Udp, SocketOptionName.AddMembership, new MulticastOption( group ));
+ broadcast.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, new MulticastOption( group ));
}
// TODO support the Two protocol
if (bus.protocolVersion == 4)