[Dnsmasq-discuss] dhcp option 43 question

Simon Kelley simon at thekelleys.org.uk
Thu Oct 9 14:58:04 BST 2014


On 06/10/14 16:30, AJ Weber wrote:
>>Try either dhcp-option=vendor:,1,ip.ip.ip.ip
>>or dhcp-option=vendor:,1,http://fqdn:8080/inform
>>Refer --dhcp-option
> http://www.thekelleys.org.uk/dnsmasq/docs/dnsmasq-man.html for details
> 
> OK, so I'm still confused.  Is it assumed that if I use
> dhcp-option=vendor... that it is option-code 43 (because we've specified
> a vendor-specific option)?  I don't exactly understand how your
> recommendation maps back to the examples given in that reference webpage.
> 
> BTW: On that webpage, it would appear that the vendor string I want to
> use is "ubnt", right?  So in order to not send this option to all my
> other dhcp clients, I would use "dhcp-option=vendor:ubnt,..." right?
> 
> Thanks again for the help!
> -AJ

That's pretty much it:

dhcp-option=vendor:ubnt,1,ip.ip.ip.ip

Will send the IP address is option number 1, encapsulated _inside_ and
option 43, when the client tells the server that its vendor class is "ubnt".

That should do exactly what you want.

Cheers,

Simon.





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