jim-p

net.inet.ip.pfil.inbound: pf
net.inet.ip.pfil.outbound: pf
net.link.bridge.pfil_onlyip: 0
net.link.bridge.pfil_bridge: 0
net.link.bridge.pfil_member: 1
net.link.bridge.pfil_local_phys: 0
net.link.pfil.inbound: 
net.link.pfil.outbound: 
net.inet6.ip6.pfil.inbound: pf
net.inet6.ip6.pfil.outbound: pf

jim-p

Solution: You have conflicting LLVM includes.
rm -rf /usr/local/include/llvm/ /usr/local/include/llvm-c/
Then rebuild graphics/dri

Build Log:
# env MAKE_JOBS_UNSAFE=yes portupgrade --batch -f dri-9.1.7_3,2
[Reading data from pkg(8) ... - 1427 packages found - done]
--->  Reinstalling 'dri-9.1.7_3,2' (graphics/dri)
--->  Building '/usr/ports/graphics/dri'
===>  Cleaning for dri-9.1.7_3,2

jim-p

$config['system']['enableserial'] = true;
write_config("Enable Serial Port");
require_once("pfsense-utils.inc");
setup_serial_port();

jim-p

sysctl kern.geom.debugflags=16
boot0cfg -v -s 1 ad0
fdisk -a /dev/ad0
sysctl kern.geom.debugflags=0
/etc/rc.reboot

jim-p

if [ `env | grep SSH_TTY | wc -l` -gt 0 ] || [ `env | grep cons25 | wc -l` -gt 0 ]; then
        /etc/rc.initial
        exit
fi