CARP HA Sync no longer works

[iev4ry]

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Before you add a new report, we ask you kindly to acknowledge the following:

• [ Y ] I have read the contributing guide lines at https://github.com/opnsense/core/blob/master/CONTRIBUTING.md

• [ Y] I am convinced that my issue is new after having checked both open and closed issues at https://github.com/opnsense/core/issues?q=is%3Aissue

  I recently updated to the latest version of OPNSense. HA was working without issue. Post update CARP no longer works

I've captured packets and can confirm that carp is running. The carp interface on both routers is a dedicated L2 link. They can also reach each other. On the primary node, when using the correct credentials it says the backup firewall is not available.

Primary

CARP:

FW rule:

Ping to Secondary:

Secondary

CARP:

FW Rule:

Ping to Primary:

Here's how they're setup:
Both running OPNsense 24.7.11_2-amd64
FreeBSD 14.1-RELEASE-p6
OpenSSL 3.0.15