Bug 470928

I see what's happening here.  A change went in to the -24 release to suppress errors from source_config() in instances where ifcfg-DEVICE did not exist, but ${CONFIG} is not the full path to the ifcfg-DEVICE file. Here's the fix:

Index: dhclient-script
===================================================================
RCS file: /cvs/pkgs/rpms/dhcp/F-10/dhclient-script,v
retrieving revision 1.3
diff -u -p -r1.3 dhclient-script
--- dhclient-script	1 Oct 2008 22:38:30 -0000	1.3
+++ dhclient-script	10 Nov 2008 22:06:32 -0000
@@ -452,10 +452,7 @@ fi
 
 CONFIG="${interface}"
 need_config ${CONFIG}
-
-if [ -f "${CONFIG}" ]; then
-    source_config
-fi
+source_config >/dev/null 2>&1
 
 if [ -n "${new_subnet_mask}" ]; then
     new_prefix="$(ipcalc -p ${new_ip_address} ${new_subnet_mask} | cut -d '=' -f 2)"

Can you make this change locally to your /sbin/dhclient-script and test it out?

Did not help, unfortunately.

root     16124  0.0  0.0  16880   824 ?        Ss   Nov10   0:00 /sbin/dhclient -q -lf /var/lib/dhclient/dhclient-eth0.leases -pf /var/run/dhclient-eth0.pid eth0
[root@safari /sbin]# kill 16124
[root@safari /sbin]# cd /etc
[root@safari /etc]# chattr -i ntp.conf resolv.conf
[root@safari /etc]# l ntp.conf resolv.conf
-rw------- 1 root root  2559 2006-06-16 00:09:25.447898000 +0300 ntp.conf
-rw-r--r-- 1 root xuser   22 2008-11-10 23:33:26.026538779 +0200 resolv.conf
[root@safari /etc]# /sbin/dhclient -q -lf /var/lib/dhclient/dhclient-eth0.leases -pf /var/run/dhclient-eth0.pid eth0&
[2] 18386
[root@safari /etc]# l ntp.conf resolv.conf
-rw-r--r-- 1 root xuser 2726 2008-11-11 00:14:01.639538809 +0200 ntp.conf
-rw-r--r-- 1 root xuser  108 2008-11-11 00:14:01.597539991 +0200 resolv.conf

Can you try this patch:

Index: dhclient-script
===================================================================
RCS file: /cvs/pkgs/rpms/dhcp/F-10/dhclient-script,v
retrieving revision 1.3
diff -u -p -r1.3 dhclient-script
--- dhclient-script	1 Oct 2008 22:38:30 -0000	1.3
+++ dhclient-script	11 Nov 2008 04:20:53 -0000
@@ -451,10 +451,10 @@ if [ -f /etc/sysconfig/networking/networ
 fi
 
 CONFIG="${interface}"
-need_config ${CONFIG}
-
-if [ -f "${CONFIG}" ]; then
-    source_config
+if [ -d /etc/sysconfig/network-scripts ]; then
+    cd /etc/sysconfig/network-scripts
+    need_config ${CONFIG}
+    source_config >/dev/null 2>&1
 fi
 
 if [ -n "${new_subnet_mask}" ]; then

Now it works, my config files survived!  Thanks.

Thanks for helping with testing out the patches.  I will put this fix in to an update for F-10.  The update should be available when F-10 ships.

But when I reboot, it still tries to overwrite /etc/ntp.conf.

dhcp-4.0.0-32.fc10 has been pushed to the Fedora 10 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update dhcp'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/f10/FEDORA-2008-9915

This bug appears to have been reported against 'rawhide' during the Fedora 10 development cycle.
Changing version to '10'.

More information and reason for this action is here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping

dhcp-4.0.0-32.fc10 has been pushed to the Fedora 10 stable repository.  If problems still persist, please make note of it in this bug report.