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dhcp-to-dns: add cname-domain override and normalize names to lowercase

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Łukasz Witkowski 2026-05-05 21:56:36 +02:00
parent 9ba1dc8347
commit 6b2ec93ee6
3 changed files with 33 additions and 3 deletions
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doc/dhcp-to-dns.md
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@ -63,6 +63,27 @@ If no domain is found in dhcp server's network definition a fallback from
* `Domain`: the domain used for dns records
### Override domain for CNAME records
By default both the A record (based on mac address) and the CNAME record
(based on host name) use the same domain. You can set a different domain
for CNAME records at three levels (in order of priority):
**Per lease** — add `cname-domain=` to the lease comment:
/ip/dhcp-server/lease/add address=10.0.0.50 comment="hostname=mydevice, cname-domain=example.com" mac-address=00:11:22:33:44:55 server=dhcp;
**Per network** — add `cname-domain=` to the network comment:
/ip/dhcp-server/network/add address=10.0.0.0/24 domain=dhcp.example.com comment="name-extra=v10, cname-domain=example.com";
This would result in A record `00-11-22-33-44-55.v10.dhcp.example.com` and
CNAME record `mydevice.example.com` for the same lease.
**Globally** — set the parameter in `global-config-overlay`:
* `DhcpToDnsCnameDomain`: domain used for CNAME records; leave empty (default) to use the same domain as A records
> ℹ️ **Info**: Copy relevant configuration from
> [`global-config`](../global-config.rsc) (the one without `-overlay`) to
> your local `global-config-overlay` and modify it to your specific needs.