Dnsmasq: customize search domain

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1

Hi,

I thought the subject had already been addressed but I cannot find the answer…

I am trying to customize the search domain provided by the DHCP server (dnsmasq). I am ok for the DHCP to provides hostnames in .lan but I wan’t the search domain to be internal.myowndomain.com.

I have tried to set the domain option to internal.myowndomain.com but it does not seems to change anything.

Is this possible?

2

In Foris DNS tab you can choose your own “Domain of DHCP clients in DNS” instead of the default “lan”.

3

Yes but this would stop providing hostnames in .lan? I only want the search domain to change.

4

This changes the names served in DNS from foo.lan. to foo.your.custom.suffix.

When you mention “search domain”, that’s something a client does, e.g. the search command in /etc/resolv.conf (on Linux/glibc systems at least, not sure where else) – in some conditions it tries to append the suffix “locally”.

5

after Foris i had to aslo check /etc/config/resolver common section

    option static_domains '0'  ## manually added
    option dynamic_domains '1' ## added by Foris

Otherwise resolving was not working correctly (in my case).

6

Yes and I do not want to change this.

Indeed. But is this option not set accordingly to what is provided by the DHCP?

I have Unbound resolver configured on the Turris with stub-zone served by NSD. The NSD zone contains LAN hosts. This is why I am not talking about DNS but only DHCP.

7

I see. I don’t know it that’s possible with DHCP.

8

OK. It is indeed working with the domain option (leaving local untouched). The error was on the client side, I was missing the UseDomains=true on systemd-networkd conf.

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