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I have a server in a small network. This server has a hostname, let's say hostname1.network.internal. And the current IP adress of this server is 192.168.0.54.

But when I call the command netstat | head -4, I get this output:

Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address                Foreign Address              State
tcp        0      0 hostname239.network.inte:ssh somehost1.network.int:40178  ESTABLISHED
tcp        0     64 hostname239.network.inte:ssh somehost2.network.in:54291   ESTABLISHED

Why is there no hostname1 in the column Local Address, but the hostname of some other machine in the network?

Also, pinging does strange things: When I start pinging hotstname1.network.internal, I get this message:

PING hostname1.network.internal (192.168.2.118) 56(84) bytes of data.
^C
--- hostname1.network.internal ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 2999ms

Can you give me some hints, what the source of the problem might be?

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1 Answer 1

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netstat without the -n option is just resolving your IP address and gets hostname1.network.internal. Try getent hosts 192.168.0.54: if this is not the intended answer, check your /etc/hosts file or your DNS server.

As for the ping command, you can see that hostname1.network.internal resolves to 192.168.2.118 which is probably not on the same network. You don't tell us enough about this second address (another interface on the same server?). Again, this may be a hostname resolution issue (try getent hosts 192.168.2.118 and getent hosts hostname1.network.internal and see if the results are consistent).

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