[Dnsmasq-discuss] Use special address 0.0.0.0 for DNS

B. Cook bcook at poughkeepsieschools.org
Thu Jun 17 13:56:54 UTC 2021


Would this help as well?

kernel parameter: net.ifnames=0

https://man7.org/linux/man-pages/man8/systemd-udevd.service.8.html

      net.ifnames=
           Network interfaces are renamed to give them predictable names
           when possible. It is enabled by default; specifying 0
           disables it.

On Wed, Jun 16, 2021 at 5:44 AM Alkis Georgopoulos <alkisg at gmail.com> wrote:

> If I'm reading this correctly, it needs an extra step, to discover and
> list all the interfaces, both after the initial installation and after
> cloning and after motherboard/NIC replacements, e.g.
>
> interface-name=webserver,enp2s0
> interface-name=webserver,enp4s0
> interface-name=webserver,enp5s0
>
> It would be simpler if we could do:
> interface-name=webserver,*
>
> Nevertheless, it saves us from modifying the dnsmasq configuration every
> time the IP changes, so it's much better than what we had!
>
> Thank you very much Simon!
>
>
> On 6/16/21 12:03 PM, Simon Kelley wrote:
> On 16/06/2021 09:10, Alkis Georgopoulos wrote:
>  > Hi, from the dnsmasq man page:
>  >
>  >> The special address 0.0.0.0 is taken to mean
>  >> "the address of the machine running dnsmasq"
>  >
>  > This is for DHCP.
>  > Can I do the same for DNS queries, in some way?
>  > So that I could map "webserver" to the dnsmasq IP,
>  > and DNS clients would be able to bookmark and use http://webserver,
>  > even if the dnsmasq IP is dynamic.
>
> Not using 0.0.0.0, this functionality is provided a different way, see
>
> --interface-name
>
> in the man page. That should do what you want nicely.
>
> Cheers,
>
> Simon.
>
>
>
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