There is great demand for policy-based networking from the user side.

用户方对基于政策的联网有着巨大的需求。

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In order for policy-based networking to work, rules need to be established.

为使基于政策联网能工作，需要建立规则。

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Also, many users find it difficult to decide who owns and creates the policies. But the biggest issue in preventing widespread adoption of policy-based networking is infrastructure costs.

同时，很多用户发现，很难决定由谁来拥有和制定政策，但是妨碍广泛采用基于政策联网的最大问题是基础架构的成本。

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