unbound: warnings for duplicate local-zone

Package Name

unbound

Maintainer

EricLuehrsen

OpenWrt Version

25.12.0-rc3, snapshot

OpenWrt Target/Subtarget

x86/64

Steps to Reproduce

Install odhcpd;
Configure it as stated in the readme for "unbound + odhcpd only"
Add some "domain" entries in /etc/config/dhcp.
Set domain_type to static and domain to "domainname.tld" in unbound.
Configure unbound to "Use extra DNS entries found in /etc/config/dhcp"

Actual Behaviour

If you start now unbound, we get a lot of warnings like:
daemon.warn unbound: [10455:0] warning: duplicate local-zone domainname.tld.

/var/lib/unbound/unbound.conf contains a lot of duplicate local-zone entries because the duplicate check in
/usr/lib/unbound/dnsmasq.sh create_local_zone() function does not work properly.
A little bit problematic is, we end with a config with entries
local-zone: domain name.tld static
local-zone: domain name.tld transparent

Also see discussion in the forum with a possible solution
unbound-odhcpd-warnings-duplicate-local-zone

Confirmation Checklist

• The package is maintained in this repository.
• I understand that issues related to the base OpenWrt repository or LuCI repository will be closed.
• I am reporting an issue for OpenWrt, not an unsupported fork.

Start with /usr/lib/unbound/dnsmasq.sh and the create_local_zone() function, then inspect /var/lib/unbound/unbound.conf using the reproduction steps. Check how static and transparent local-zone entries are generated from /etc/config/dhcp and the unbound configuration. Done means the reproduced configuration no longer contains duplicate local-zone entries or produces duplicate-zone warnings.