Why automatic tools can change /etc/resolv.conf?

[Michele Dalla Silvestra <dalla@keycomm.it>]

A little question. Only the Root (the human) should modify a file in /etc,
and dpkg ask when it may change a config file. This should be good.

For /etc/resolv.conf, instead, many programs pretend to modify it (script
from pppd, dhcp-client and so on).

But for use dynamic dns server one can use dnrd, that can connect to various
DNS servers dynamically without modify any file!


If is not possible to put dnrd in any installation, why not modify a file
like resolv.conf in /var/somewhat and make a symlink in /etc/resolv.conf? If
an administrator want to make him change in /etc/resolv.conf and be sure
that a program not modify it, he remove the symlink and create his
resolv.conf.


ciao

Michele