clients with no hostname

[Glenn Satchell]

There are a few ways you can do it on the server, eg:

option hostname = pick-first-value (option hostname, binary-to-ascii( 
...) );

where the unique string for the default hostname can be derived from the 
mac or ip address using binary-to-ascii, eg:

concat (binary-to-ascii (10, 8, "-", leased-address), "-dhcp");

concat (binary-to-ascii (16, 8, "-", substring (hardware, 1, 6), "-dhcp");

Useful man pages are dhcp-options and dhcp-eval.

regards,
-glenn

On 01/19/12 00:05, jeffrey j donovan wrote:
> Greetings
>
> I have been giving out ip addresses to machines on my network. I'm looking at my lease file and I have found many devices do not have a hostname identifier.
>
> IP address: 10.153.15.101    Lease status: Active    Lease start: 17/01/2012 09:01:11    Lease end: 18/01/2012 09:01:11    Mac address: 00:1e:52:70:f7:53    WINS name: FHS-CFF-LA06-06
> IP address: 10.153.15.114    Lease status: Active    Lease start: 17/01/2012 09:01:35    Lease end: 18/01/2012 09:01:35    Mac address: 00:1e:52:70:f7:5e    WINS name: FHS-CFF-LA06-02
> IP address: 10.153.15.115    Lease status: Active    Lease start: 17/01/2012 08:27:05    Lease end: 18/01/2012 08:27:05    Mac address: 00:23:12:06:20:4a
> IP address: 10.153.15.117    Lease status: Active    Lease start: 17/01/2012 08:45:28    Lease end: 19/01/2012 08:45:28    Mac address: 00:23:12:06:20:6e
>
>
> how can I ensure a client has a hostname before dhcp hands out an address . in this case, two machines have the correct WINS name, the other has nothing.
>
> Is there a way I can say,...
>
> If WINS name =  " blank" then send this address , else send this.
>
> or
>
> if WINS name = F00 then send " ipaddress "
>
>
> any insight would be helpful.
> -j
> _______________________________________________
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> dhcp-users at lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users


-- 
regards,
-glenn
--
Glenn Satchell                            |  Miss 9: What do you
Uniq Advances Pty Ltd, Sydney Australia   |  do at work Dad?
mailto:glenn.satchell at uniq.com.au         |  Miss 6: He just
http://www.uniq.com.au tel:0409-458-580   |  types random stuff.