OPNSense running in domU has no network connectivity on 5.15.29+

[Colton Reeder <colton.reeder@xxxxxxxxx>]

Hello,

I am running the FreeBSD-based router OS OPNSense in a domU. I
recently upgraded my dom0 kernel from 5.15.26 to 5.15.32 and with the
new kernel, OPNSense had no connectivity. I downloaded from kernel.org
5.15.26-32, built and installed each version and booted them
consecutively until I found the version that no longer worked. It
turned out to be 5.15.29.

I looked through the change log of 5.15.29 and found two commits for xen-netback

commit 2708ceb4e5cc84ef179bad25a2d7890573ef78be commit
fe39ab30dcc204e321c2670cc1cf55904af35d01

I reverted these changes (a revert of a revert, yes)  in 5.15.32,
built and installed. Now the network works. Now I dont know enough to
know thats for sure the right fix. Maybe I have a config issue, I dont
know, but reverting that change fixes the problem. What should I do?
I was asked to provide xenstore -ls https://pastebin.com/hHPWgrEy