RTI Connext .Net APIs  Version 6.0.1
"dds.transport.UDPv4.builtin.reuse_multicast_receive_resource"
RTI Connext DDS API Reference » Pluggable Transports » Built-in Transport Plugins » UDPv4 Built-in Transport Properties

Setting this to 0 (FALSE) prevents multicast crosstalk by uniquely configuring a port and creating a receive thread for each multicast group address.

[default] 1.

RTI Connext .Net APIs Version 6.0.1 Copyright © Sat Nov 23 2019 Real-Time Innovations, Inc