I ran into upgrade pain where jails created before a certain time (had to have been in the not-so-distant past because none of my jails are particularly old) lo

I ran into upgrade pain where jails created before a certain time (had to have been in the not-so-distant past because none of my jails are particularly old) lost networking post-upgrade. I rolled back to the previous release since I didn't have time to deal with it, but this is now 2 releases with some major caveats.