None of those reports are relevant to 2.2, those are all in reference to 2.1.x or older versions which have a much older base OS. 2.2 is fully up to date with FreeBSD and we'll be able to stay more current with FreeBSD going forward, which will eliminate most all of those issues. For the rare edge cases that may remain, it's not hard to drop in a kernel module and kldload it. The hard part is applying the relevant patches and building it, which isn't something you want to or can do on pfSense, you have to setup a stock FreeBSD system that has the build tools to do so.