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测试环境：
问题描述： 两台机器连接在同一wifi下，能ping通，可以ssh登录，使用ros2 multicast receive/send 也可以互相接收到Hello world 消息，但是其中任一一台机器发布的topic，另外一台机器都无法发现
ros2 multicast receive/send
Hello world
我也遇到了这个问题，请问解决了吗？