"deny client-updates;" doesn't

Lowrie, Paul paul.lowrie at nz.unisys.com
Thu Feb 14 23:37:53 UTC 2008


Hi Guys,
 
Am I bonkers or does "deny client-updates;" directive does not have any
effect.

I checked the syntax with "dhcpd -t" which is happy to accept it as
valid.
 
The man page dhcpd.conf(5) indicates "deny client-updates" but the
discussion parts say to use "ignore client-updates;".
 
"allow  client-updates" works - this is the default
"ignore client-updates" works.
"deny   client-updates" doesn't work.
 
Am using DHCP v4.0.0.
 

So its easy to spot here's the extract from man dhcpd.conf(5) 
 
[snip]
The client-updates keyword

    allow client-updates;
     deny client-updates;   <<< NOPE: should be     ignore
client-updates;

The client-updates flag tells the DHCP server whether or not to honor
the
client's intention to do its own update of its A record. This is only
relevant
when doing interim DNS updates. See the documentation under the heading
THE
INTERIM DNS UPDATE SCHEME for details.

I have fixed this in my environment by using "ignore client-updates" but
was scratching my head for a while.

Would be nice if whoever maintains the code to check and please update
the man page?

Cheers
Paul:)
 

Paul Lowrie|  Managed Service Centre - GOIS
Unisys  |  56 The Terrace  |  Wellington NZ  | paul.lowrie at unisys.com
"If at first you don't succeed, Skydiving is not for you."


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