[Dnsmasq-discuss] Dynamic address config?

[Geert Stappers]

On Wed, Nov 23, 2022 at 01:47:27PM +0800, Feng Shao wrote:
> There are a bunch of machines in our lab, and we normally don't have DNS
> records configured for them, only accessing by IP. In order to ssh to them
> with key auth, I have a config in my .ssh/config like
> 
> Host *.mylab
>   User root
>   IdentityFile ~/.ssh/id_rsa.work
> 
> and I have some "address=/123.123.123.123.mylab/123.123.123.123" line in
> dnsmasq.conf. The problem here is I need to add an entry whenever a new IP
> comes.

So share with us a more representive sample set of such entries.

 
> Can this configuration be dynamically? For example,
> "address=/*.mylab/somecmd %1", where "somecmd" is a external command and %1
> will be replaced by the name in A/AAAA request. So that for any DNS request
> to *.mylab, dnsmasq invoke this external command and pass the name as
> argument, the output of external command, which will be interpreted as
> IPv4/IPv6 addr then responsed to client?

Advice:  Use an open question to start a discussion.



Groeten
Geert Stappers


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