Free Options

Ralph Droms rdroms at
Thu Jan 10 16:08:21 UTC 2008

Ruben - Take a look at RFC 2131, RFC 2132, RFC 3942 and 
  for details about option codes available for private use.

Executive summary - with some exceptions, option codes 224-254 are  
available for private use.  I don't recall the details; I think the  
two option codes you mentioned are known to be in unofficial use, but  
they don't seem to be documented in 
.  Bernie - did you receive any information about 249 and 252 in your  
followup to RFC 3942?

- Ralph Droms

On Jan 10, 2008, at Jan 10, 2008,10:43 AM, Ruben Rios wrote:

> Hi there,
> I have been searching on DHCP Options because I would like to use  
> some private ones for my own private use. Can anyone tell me which  
> of them can I use for that? I thought I could use any, but while  
> eavesdropping on my network I have realized some of these options  
> are already in use ( 249: Classless static routes; 252: proxy  
> autodiscovery). Are there any others I should avoid using?
> Thanks a lot!
> Rubén Ríos
> Web Revelación Yahoo! 2007:
> Premio Favorita del Público - ¡Vota tu preferida!

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