[Dnsmasq-discuss] Does dnsmasq support cname within same domain?

[Geoff Back]

On 07/03/2022 18:20, Simon Kelley wrote:
> A quick test of the current development code fails to reproduce this, 
> which is puzzling.
>
>
> One thing to check:  having a dhcp-host line which associates an address 
> with a name is not enough to make this work: there needs to be an active 
> DHCP lease in place to be able to resolve client1.test.example.com. If 
> leases are coming and going, that can be enough to confuse tests.
Hi Simon,

Given this:

domain=example.com
dhcp-host=11:22:33:44:55:66,10.1.1.2,myhost
cname=alias.example.com,myhost.example.com

Then it would appear that dnsmasq has enough information to respond to a
lookup for alias.example.com with full information; since the
information that would be returned to the query is unchanged by whether
there is a lease or not, I would have expected it to do so.

However, if I am reading the above correctly, that's not the case and
there has to be an active lease on 'myhost' for dnsmasq to return the
assigned IP.

Assuming I have that right, I'm sure there's a good reason; could you
enlighten me/us as to why?

Thanks,

Geoff.

>
> Do you see the same effect if you use host-record to define the address 
> of client1?
>
>
> Simon.
>
>   alias.test.example.com>,alias.dummy.example.com
>>     <http://alias.dummy.example.com>,client1.test.example.com
>>     <http://client1.test.example.com>____
>>
>>
>> No, it behaves the same as I use two separate cname lines:
>> different domain alias resolves, and same domain alias doesn't.
>> Did it work for you? If so, what version of dnsmasq do you use?
>>
>> Thanks!
>> Frank
>>
>>
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