dns resolver add multiple IP to opnsense box

[ka2er]

Hi,

my opnsense box is configured with multiple interfaces and is named fw.mydomain.fr.
It has dns resolver enabled in fordwarding mode.

When an internal client try to resolve fw.domain.fr it receive a lot of IP causing horrible lag when trying to connect via browser to FW as the interface reachable is the last in the DNS answer.

Code Select Expand

dig fw.home.wospe.fr

; <<>> DiG 9.8.3-P1 <<>> fw.mydomain.fr
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50769
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;fw.mydomain.fr. IN A

;; ANSWER SECTION:
fw.mydomain.fr. 3600 IN A 192.168.4.1
fw.mydomain.fr. 3600 IN A 192.168.2.1
fw.mydomain.fr. 3600 IN A 192.168.1.1

How can I limit answer to only the last one ? don't know which setting cause this answer ?
Is there a better approch to reach my opnbox via fqdn ?

ps: my box is https exposed to internal lan via haproxy + let'sencrypt plugin.

Thanks for any hint or help.