From owner-freebsd-questions  Tue Oct 29  5:40:58 2002
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Date: Tue, 29 Oct 2002 08:40:39 -0500
To: Paulo Roberto <nirv199@yahoo.com>, questions@freebsd.org
Subject: Re: dhcp option to *not* overwrite /etc/resolv.conf
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From: Dan Pelleg <daniel+fbsdq@pelleg.org>
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> Hi,
>
> I have read the man pages, searched a few forums, but I did not found a
> way to prevent dhcp to do not change my /etc/resolv.conf. I do not have


You can write a script to fix resolv.conf right after dhclient ruined
it. The way to do it is to hook it from /etc/dhclient-exit-hooks
(which you'll need to create). Here's mine, which calls two other scripts (not
included), one of which only if the IP address actually changed. This one
also gets the new servers as arguments.


------------------------------ /etc/dhclient-exit-hooks

# nothing to do unless we're bound
case ${reason} in
        BOUND | RENEW | REBIND | REBOOT )
		[ -x /etc/set-ntp ] && . /etc/set-ntp
  		if [ -n "${new_domain_name_servers}" ]; then
		    if [ -z "${old_domain_name_servers}" ] || [ x${old_ip_address} != x{$new_ip_address} ]; then
			[ -x /etc/refresh-named ] && /etc/refresh-named ${new_domain_name_servers}
		    fi
		fi
        ;;
esac

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