Windows下的routing設定方法
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@echo off
route add -p xxx.xxx.xxx.xxx mask 255.255.255.0 ooo.ooo.ooo.ooo
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解說：
route add xxx.xxx.xxx.xxx mask 255.255.255.0 ooo.ooo.ooo.ooo
只要是跑xxx.xxx.xxx.xxx的網段的封包，則都丟給ooo.ooo.ooo.ooo來做routing
