[Dnsmasq-discuss] multiple subnets behind DHCP relay

[Takács Balázs]

Simon Kelley <simon at thekelleys.org.uk> írta:
>Takács Balázs wrote:>
> Simon Kelley <simon at thekelleys.org.uk> írta:>
>> Takács Balázs wrote:>>
>> Dear all,>>
>>>>
>> The relay sends all the request from 10.1.0.1 IP address. The default>>
>> subnet for clients is the 10.1.0.0. This works ok. Based on client>>
>> mac address I would like to place some clients in 195.x.x.0/24>>
>> (public ip)subnet. I have set both the pools for 10.1.0.0 and>>
>> 195.x.x.0 subnets in dnsmasq.conf and placed mac address ip address>>
>> pairs to /etc/ethers file for clients have to get public address. But>>
>> the specified clients still get ip from 10.1.0.0 pool. Is there a>>
>> possibility to force dnsmasq to ignore the DHCP relay address and try>>
>> to give out address even in case of subnet missmatch?>>
>> There's no easy answer to this. If you were not using a DHCP relay, it>>
>> would work fine: dnsmasq is clever enough to work out all the addresses>>
>> that correspond to a physical network. Sadly, the relay only includes a>>
>> single address. It's possible for the relay to include a different>>
>> address for subnet selection, using the subnet selector option, but that>>
>> still only gives you one address and you need two.>>
>>>
> Unfortunately there is no possibility to add subnet selector option to the relay.>
> >
>> I've thought about adding an equivalent to the ISC "shared-network">>
>> declaration, which is not pretty, but would work.>>
> >
> May I expect to have this declaration implemented?>
>
>No promises, but I'll try to work on something to solve the problem.>
Thank you in advance.


T.


>
Simon.>
>
> >
> >
> Simon.>>
> >
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