Error updating repositories! Non-recoverable resolver failure

[MrHappyHippo]

Why is it happening? and how can i fix that?

System -> Firmware -> Mirror -> Deciso (HTTPS, NL, Commercial)
IPv6 -> disabled
Unbound DNS -> yes
Kea DHCP -> yes


System -> Firmware -> Run an audit -> Connectivity Check:

Code Select Expand

***GOT REQUEST TO AUDIT CONNECTIVITY***
Currently running OPNsense 25.4.1 (amd64) at Sun Jun 22 14:06:02 CEST 2025
Strict TLS 1.3 and CRL checking is enabled.
Checking connectivity for host: opnsense-update.deciso.com -> 89.149.211.205
PING 89.149.211.205 (89.149.211.205): 1500 data bytes
1508 bytes from 89.149.211.205: icmp_seq=0 ttl=55 time=37.200 ms
1508 bytes from 89.149.211.205: icmp_seq=1 ttl=55 time=22.135 ms
1508 bytes from 89.149.211.205: icmp_seq=2 ttl=55 time=23.714 ms
1508 bytes from 89.149.211.205: icmp_seq=3 ttl=55 time=22.244 ms

--- 89.149.211.205 ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 22.135/26.323/37.200/6.311 ms
Checking connectivity for repository (IPv4): https://opnsense-update.deciso.com/${SUBSCRIPTION}/FreeBSD:14:amd64/25.4
Updating OPNsense repository catalogue...
Fetching meta.conf: . done
Fetching packagesite.pkg: .......... done
Processing entries: .......... done
OPNsense repository update completed. 875 packages processed.
All repositories are up to date.
Checking connectivity for host: opnsense-update.deciso.com -> 2001:1af8:4f00:a005:5::
ping: UDP connect: No route to host
Checking connectivity for repository (IPv6): https://opnsense-update.deciso.com/${SUBSCRIPTION}/FreeBSD:14:amd64/25.4
Updating OPNsense repository catalogue...
pkg: https://opnsense-update.deciso.com/${SUBSCRIPTION}/FreeBSD:14:amd64/25.4/latest/meta.txz: Non-recoverable resolver failure
repository OPNsense has no meta file, using default settings
pkg: https://opnsense-update.deciso.com/${SUBSCRIPTION}/FreeBSD:14:amd64/25.4/latest/packagesite.pkg: Non-recoverable resolver failure
pkg: https://opnsense-update.deciso.com/${SUBSCRIPTION}/FreeBSD:14:amd64/25.4/latest/packagesite.txz: Non-recoverable resolver failure
Unable to update repository OPNsense
Error updating repositories!
Checking server certificate for host: opnsense-update.deciso.com
depth=2 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root G3
verify return:1
depth=1 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = RapidSSL TLS ECC CA G1
verify return:1
depth=0 CN = opnsense-update.deciso.com
verify return:1
DONE
***DONE***