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The auto summary feature can cause problems with dis-contiguous networks. This is why this feature is usually turned off (it is much better to use manual summarization to control exactly where and how summarization affects the network).
I have the same problem too, but had to solve it partially by the no keepalive command and check the neighbor on the interface. I can only solve the problem if the whole network is reachable by me.Hope this was helpful
dear sir,if this lab is locally configured in packet tracer it means that you have no access to the internet and you can only reach your dns with your local IP.
