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My broad is embedded linux and cpu is arm. I have a question of UDP. My broad want to pass cdrouter test. But when cdrouter create many UDP connections to my broad. Every 10~12 UDP connections are created, the broad will stop a while then cdrouter test failure(it might be timeout or something else...). TCP does not have this problem. Could someone can help me? I have no idea what the problem is.

why my broad will "stop a while" when it has 10~12 UDP connections at continue time?