Odi's astoundingly incomplete notes
New entries | CodeRedhat maps hostname to loopback interface
This is typical on Redhat systems:
/etc/hosts: 127.0.0.1 h1234.example.com h1234 localhost.localdomain localhostThis maps the host name to the loopback interface address. I don't find this particularly amusing. It's really bad practice. Because it leads to the following inconsistency:
user@h1234 $ host h1234 h1234.example.com has address 10.1.2.3 user@h1234$ telnet h1234 80 Trying 127.0.0.1...It gets especially in your way if you have services that bind to specific addresses only:
user@h1234 $ netstat -lnt Active Internet connections (only servers) Proto Local Address Foreign Address State tcp 10.1.2.3:80 0.0.0.0:* LISTEN
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