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I am trying to write a program that changes the default gateway of network time by time. But it seems that there are caches on the route table in every process so that I cannot control the network behavior accurately. Can I just flush route table to that process?
For example if I executed an Iexplore.exe first, then changed the default gateway to a Korean vpn, IE still went to amercia default gateway. But if I change the default gateway first and then execute Iexplore.exe, it went to Korea.
So how can I flush the route table cache? Thanks.
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To clear the table of all gateway entries, use the -f switch with the route command. You can combine this switch with another command (such as add), in which case the tables will be cleared before the other command is run.
For both IPv4 and IPv6 networks, you can clear all routes in the routing table by entering the TCP/IP ROUTE command with the CLEAR and the NOW options. The NOW option clears dynamic and static routes (manually configured routes) including those that have active dialogs associated with them.
In Microsoft Windows, you can go through by route -f command to delete your current Gateway, check route / ? for more advance option, like add / delete etc and also can write a batch to add route on specific time as well but if you need to delete IP cache, then you have the option to use arp command.
Flush routing table using ip command. IP is a Linux command line tool used to show and manipulate routing, network devices, interfaces, and tunnels. It is a replacement for ifconfig tool.
From command prompt as admin run:
netsh interface ip delete destinationcache Works on Win7.
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route -f causes damage. So we need to either disconnect the correct parts of the routing table or find out how to rebuild it.
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