removing global options from local scopes

[Adam Moffett]

Does something bad happen if you override the option with something that 
just won't work? Like assign localhost or a non existent host as the 
WINS name server?

> hi,
>
> sorry for the dumb question...and I do feel dumb right now. maybe
> its just too obvious, or maybe it cannot be done, but heres the
> right list..and heres the question.
>
>
> my configuration has several global options that all subnets hand
> out to clients. this is common and removes the need for specifying
> values locally eg
>
> option domain-name "our.net";
> option netbios-name-servers 192.168.0.10, 172.16.34.2;
> option netbios-node-type 2;
>
>
> now, we are looking at stopping those WINS values for particular
> subnets....
>
> now, is it really the case that to do this, we must put those
> netbios-* entries into every single subnet definition (local scope)
> - other than the ones we dont want it in - rather than global definition?
>
> or can we clear/negate those values locally?  (we dont HAVE any alternative
> values for those options so its not a case of overriding them with eg
>
> option netbios-name-servers 192.168.10.11;
> option netbios-node-type 3;
> )
>
> if theres a mechanism, then it needs to be supported/official and not just
> a kludge that happens to work   (DHCP v4.1 and up in use here) - ie
> needs to work after a minor upgrade etc  :-)
>
>
> alan
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