[Dnsmasq-discuss] Re: Simple config question (I hope)

Simon Kelley simon at thekelleys.org.uk
Thu Mar 1 18:56:47 GMT 2007


AJ Weber wrote:
> Unfortunately, it doesn't seem to be working.
>  
> It will serve DHCP to the eth0 interface just fine.  However, no action 
> from the eth2 interface.
>  
> It does not seem "to just work". :(
>  
> How do I go about troubleshooting this?

Check the logs: if there's errors, that will help diagnose the problem, 
if there's no DHCP transactions logged for eth2, then you probably have 
an iptables/firewall rule which is blocking DHCP broadcasts from eth2.

Cheers,

Simon.

>  
> Thanks,
> AJ
> 
>     ----- Original Message -----
>     *From:* AJ Weber <mailto:aweber at comcast.net>
>     *To:* Simon Kelley <mailto:simon at thekelleys.org.uk>
>     *Cc:* dnsmasq-discuss at lists.thekelleys.org.uk
>     <mailto:dnsmasq-discuss at lists.thekelleys.org.uk>
>     *Sent:* Thursday, March 01, 2007 1:01 PM
>     *Subject:* [Dnsmasq-discuss] Re: Simple config question (I hope)
> 
>     Boy, was I hoping that was the answer! ;)
>      
>     Thanks again,
>     AJ
>      
> 
>         ----- Original Message -----
>         *From:* Simon Kelley <mailto:simon at thekelleys.org.uk>
>         *To:* AJ Weber <mailto:aweber at comcast.net>
>         *Cc:* dnsmasq-discuss at lists.thekelleys.org.uk
>         <mailto:dnsmasq-discuss at lists.thekelleys.org.uk>
>         *Sent:* Thursday, March 01, 2007 12:43 PM
>         *Subject:* Re: Simple config question (I hope)
> 
>         AJ Weber wrote:
>          > I have three NICs/interfaces in my server (eth0-2).  (IPCop
>         Question
>          > coming)
>          >
>          > I want to serve DHCP to eth0 and eth2 ONLY.
>          >
>          > Thus, I've added the "except-interface=eth1" to the config. 
>         That's
>          > probably what I want.
> 
>         If you don't want to serve DNS on eth1 either, that's fine. If
>         you want
>         DNS on eth1 (but not DHCP) then do
> 
>         no-dhcp-interface=eth1
> 
>         instead.
> 
>          >
>          > However, I want to serve 198.162.1.x addresses via DHCP to
>         eth0.  I
>          > want to serve 192.168.2.x addresses to eth2.  (These
>         interfaces have
>          > a static address in that range already.)
>          >
>          > I see I can enter two different dhcp-range's into the config.
> 
>         Yes, do that.
> 
>          > How do
>          > I tell it to serve the .1 subnet to eth0 and the .2 subnet to
>         eth2?
> 
>         There's no need, it all just works automagically.
>          >
>          > The network-id thing is messing with my head.  Do I need to
>         use that?
> 
>         No, it will just work.
> 
> 
>         Cheers,
> 
>         Simon.
> 
>     ------------------------------------------------------------------------
> 
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