RHEL4 and ntpd

[Wayne Pinette]

Ok, I have a crazy problem here.  I have a server here which, among
other things, is going to be an ntpd service for all the machines
in its network.  I have a similar setup in another network running RHEL
3.  That all works fine, but what Im finding with RHEL4 is
if I have the line in the ntp.conf file that goes : 

restrict 192.168.0.0 mask 255.255.255.0 notrust nomodify notrap


Nothing in the network can get nameservice, and debug shows me that in
fact the ntpd packets are being ignored by the server.
(ntpdate -d -d <server>)

If I change the line to  :

restrict 192.168.0.0 mask 255.255.255.0 nomodify notrap

My servers (all running some form of redhat) sync fine.  Is there a
reason why notrust doesn't seem to work? 
Did I miss press release?  Just curious if anyone has any ideas about
this.

Wayner