How Do You Find an IP Address That Is Mysterious and Elusive in Your Network?

Problem scenario
An IP address is pingable from one Linux server.  On this server there are no Docker containers running.  A traceroute reveals that this IP address is one hop away from your server.  How do you find out what this IP address belongs to?

Use this command:  ip addr show

You may also want to use this command:  route -n

For a more thorough guide to troubleshooting network problems, see this posting.

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