Dynamic DNS can't register - OpenSSL error with curl?

[ZPrime]

I have a dual WAN setup at home, using WOW cable and Spectrum cable.

Right now, WOW is setup with a lower priority (under Gateways > Single), so OPNsense itself uses WOW as the "default route."

I have Dynamic DNS configured for both interfaces, with two different hostnames (wan-wow and wan-spectrum), but both are on the same domain at Namecheap (so they're both using the same update password, too).

The hostname for the WOW connection updates correctly.

The hostname for the Spectrum connection is throwing errors when it tries to update, like so (the ".example.com" is not my actual domain name of course):

Code: [Select]

2020-10-04T15:47:13 opnsense[59877] /services_dyndns_edit.php: Curl error occurred: OpenSSL SSL_connect: Connection reset by peer in connection to dynamicdns.park-your-domain.com:443
2020-10-04T15:47:13 opnsense[59877] /services_dyndns_edit.php: Dynamic DNS (wan-spectrum.example.com): Current Service: namecheap
2020-10-04T15:47:13 opnsense[59877] /services_dyndns_edit.php: Dynamic DNS (wan-spectrum.example.com): _checkStatus() starting.
2020-10-04T15:47:03 opnsense[59877] /services_dyndns_edit.php: Dynamic DNS (wan-spectrum.example.com via Namecheap): _update() starting.
2020-10-04T15:47:03 opnsense[59877] /services_dyndns_edit.php: Dynamic DNS (wan-spectrum.example.com): running dyndns_failover_interface for wan. found igb3
2020-10-04T15:47:03 opnsense[59877] /services_dyndns_edit.php: Dynamic DNS (wan-spectrum.example.com): 173.91.x.y extracted
2020-10-04T15:47:03 opnsense[59877] /services_dyndns_edit.php: Dynamic DNS: updatedns() starting

Any suggestions? I already enabled the "Verbose logging" option for this hostname, and that's the output above. When it's not Verbose, there are fewer lines, but the same error.

This identical setup worked correctly on pfSense, both hostnames (using Namecheap and the same base domain) were updated as expected.

I'm running 20.7.3 OpenSSL version.

[ZPrime]

Talking to myself... I was able to work-around this using OpenDNS's "DNS-O-Matic" service and having it update this hostname at Namecheap.

But there's definitely something wrong, since I could do two separate hostnames using pfSense and OPNsense is failing the same task. Is there a way to get more debug information so I can file a bug? The repro steps are pretty easy, other than requiring a domain at Namecheap...

[ZPrime]

Anybody?
What do I need to file a bug against this problem?