[Dnsmasq-discuss] feature requests...

Simon Kelley simon at thekelleys.org.uk
Sun Apr 1 17:57:05 BST 2007

Carlos Carvalho wrote:
> richardvoigt at gmail.com (richardvoigt at gmail.com) wrote on 31 March 2007 12:49:
>  >On 3/31/07, Carlos Carvalho <carlos at fisica.ufpr.br> wrote:
>  >> Since it seems Simon is including new features I'll ask for my two pet
>  >> ones :-)
>  >>
>  >> I'd like to be able to specify separate interface lists for dns and
>  >> dhcp services. I have tens of subnets where I don't need dns, just
>  >> dhcp, and I'd like to not have a dns server in them.
>  >>
>  >> The second feature is the possibility of specifying a different hosts
>  >> file for each subnet. With a single file all names in all subnets are
>  >> available to each machine, which is generating noise even though
>  >> traffic is blocked. This could be avoided if it were possible to tell
>  >> dnsmasq only the hosts allowed in each subnet.
>  >
>  >This really sounds as if you need multiple instances of dnsmasq, one
>  >for each interface.  Then you can selectively enable dns and dhcp, and
>  >have isolated hosts files.
> It's not possible to have dhcp without dns now. Also, I have ~70
> subnets, too many to have one instance of dnsmasq for each.

Are these shared-net subnets, VLANs, or do you have machine with 70 
ethernet cables going into the back? (surely not!)

You could presumably use iptables to deny DNS services to the subnets 
which don't need them.



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