Trouble shooting tips
ICMP Message Likely Issue
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Redirect for Network = Default gateway incorrectly configured
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Redirect for Host = Subnet mask incorrectly configured
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Port Unreachable = Application port not started or responding
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Host Unreachable = Have route but box not answering ARP request
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Protocol Unreachable = ARP request answered but box not answering specific protocol request
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Network Unreachable = Router does not have route to reach network
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Configure filters to look for fragmentation fields in the header with More Fragments or Don't Fragment bits set
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