Q. Re loopback address for jails

James B. Byrne byrnejb at harte-lyne.ca
Tue Apr 11 15:49:00 UTC 2017


Given that for a FreeBSD jail one clones the lo interface and assigns
a different address than 127.0.0.1 say 127.0.33.1 what files does one
need to change throughout the jail?

I have modified /usr/jails/jail/etc/hosts,
/usr/jails/jail/etc/resolv.conf and
usr/jails/jail/etc/ssh/sshd_config. I note however that there are a
very large number of configuration files throughout the jail that
contain a literal value of 127.0.0.1.  Do all of these need updating?

Under  /usr/jails/jail/usr/local/etc/ there are also files that
contain 127.0.0.1 as literal values,
/usr/jails/hlldns02/usr/local/etc/rc.d/named for example.  How does
one handle rc.d scripts that specify 127.0.0.1?

If these all require manual alteration then why is not localhost used
instead?  Then one would only need alter the hosts file.



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