Set the configuration --log-queries.
That will allow you to see if the queries are getting to dnsmasq, and it
will give you a full dump of the DNS cache (including DHCP derived
names) if you send the dnsmasq process SIGUSR1.
Both of these will help in diagnosing the problem.
Cheers,
Simon.
On 12/05/2022 15:55, Rance Hall via Dnsmasq-discuss wrote:
I in the beginning of troubleshooting an issue with name resolution in
dnsmasq on a freebsd server.
I'm running dnsmasq 2.86 and I'm not able to resolve hostnames that are
dhcp clients. This is a new development and may possibly be related to a
FreeBSD system upgrade from 13.0-RELEASE to 13.0-RELEASE-p11.
Example, my desktop machine is a dhcp client and is active on the
network, and can ping via hostname the firewall server that runs dnsmasq
which is assigned a static IP and reads /etc/hosts for static names and
/etc/resolv.conf.dnsmasq for upstream dns servers.
However the firewall cannot ping the client by name, despite a record
for that host in the dnsmasq.leases file.
again, this is a new issue, and this used to work when the server was
originally setup. I can prove that the leases database file is being
written to by the dnsmasq service as there are recent (read: from today)
timestamps on the file itself.
I'd appreciate any pointers as I'm running out of things to check and
haven't found an obvious problem yet.
Below is the startup log entry from a dnsmasq server restart. Not sure
if it helps, but I didnt want to ask without trying to prove that I
tried to fix it myself.
<begin log snippet>
May 12 09:21:16 icm dnsmasq[17586]: started, version 2.86 cachesize 150
May 12 09:21:16 icm dnsmasq[17586]: compile time options: IPv6
GNU-getopt no-DBus no-UBus i18n IDN2 DHCP DHCPv6 no-Lua TFTP
no-conntrack ipset auth cryptohash DNSSEC loop-detect no-inotify dumpfile
May 12 09:21:16 icm dnsmasq-dhcp[17586]: DHCP, IP range 192.168.19.75 --
192.168.19.125, lease time 12h
May 12 09:21:16 icm dnsmasq-tftp[17586]: TFTP root is /usr/local/tftp
secure mode
May 12 09:21:16 icm dnsmasq[17586]: using only locally-known addresses
for hallhome.private
May 12 09:21:16 icm dnsmasq[17586]: reading /etc/resolv.conf.dhcp
May 12 09:21:16 icm dnsmasq[17586]: using nameserver 71.10.216.1#53
May 12 09:21:16 icm dnsmasq[17586]: using nameserver 71.10.216.2#53
May 12 09:21:16 icm dnsmasq[17586]: using only locally-known addresses
for hallhome.private
May 12 09:21:16 icm dnsmasq[17586]: read /etc/hosts - 8 addresses
</end log snippet>
Thanks for any assistance/pointers you can provide.
Rance
_______________________________________________
Dnsmasq-discuss mailing list
Dnsmasq-discuss@lists.thekelleys.org.uk
https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss
_______________________________________________
Dnsmasq-discuss mailing list
Dnsmasq-discuss@lists.thekelleys.org.uk
https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss
