# Pastebin 0Qk7I8qU
vm create -t freebsd -s 20G testy
vm iso file:///downloads/BSD/FreeBSD-13.2-RELEASE-amd64-disc1.iso
vm install testy FreeBSD-13.2-RELEASE-amd64-disc1.iso
vm console testy
and reboots fine

# testy.conf
loader="bhyveload"
cpu=4
memory=16G
network0_type="virtio-net"
network0_switch="public"
disk0_type="nvme"
disk0_name="disk0"
disk0_dev="sparse-zvol"
uuid="2d1d98e2-dbd3-455e-b3a9-437553557df1"
network0_mac="58:9c:fc:0a:c0:39"