On 2/26/26 04:37, Martin wrote:
Currently we run Unbound without NSD for our local net where
Unbound has a local file with IPs and PTRs for the LAN. We
also use dhcpd to assign fixed IPs based on the MAC.
So far all is done manually. Is there some way to automatically
add hosts and hostnames to Unbound when a lease is granted from
dhcpd or some other way?
Kind regards
MANY years ago, someone named Michael Stella wrote a script to
populate DJBDNS files from dhcpd. I found it fairly easy to
convert to NSD. It is no longer on his website, but it's in
the internet archive at:
https://web.archive.org/web/20160310223857/http://www.thismetalsky.org/files/dhcp_dns/dhcp_dns/
I've been using it in-house for well over 20 years now.
Very slick, when I bring a new machine on-line, by the time
I care about its DNS resolution, it has been populated and
answering accordingly.
Issues:
* It should use nsd-control to reload the zone files, but it
doesn't...so it runs as root, which is not good.
* Doesn't populate reverse DNS (should be an easy addition for
some cases)
* In-house, I have different subnets for wifi and wired. If a
machine moves from wired to wifi, the DNS does not change in a
timely manner (should be fixable)
* It doesn't handle multiple dhcpd servers. It appears our
dhcpd with synchronization doesn't actually sync the
dhcpd.leases files between dhcpd nodes (or I'm doing it wrong).
Nick.
