Fix mac address validity.

ansible/roles/bhyve/files/bhyve_netgraph_bridge.bash

@@ -63,6 +63,9 @@ function start_vm {
     # -H release the CPU when guest issues HLT instruction. Otherwise 100% of core will be consumed.
          # -s 3,ahci-cd,/vm/.iso/archlinux-2023.04.01-x86_64.iso \
              # -s 29,fbuf,tcp=0.0.0.0:5900,w=1920,h=1080,wait \
+            # -s 29,fbuf,tcp=0.0.0.0:5900,w=1920,h=1080 \
+
+    # TODO: Look into using nmdm instead of stdio for serial console
     while true; do
         set -x
         set +e
@@ -75,7 +78,6 @@ function start_vm {
             -s "4,nvme,/dev/zvol/${zfs_path}/disk0" \
             -s "2:0,virtio-net,netgraph,path=${bridge_name}:,peerhook=${bridge_link_name},mac=${mac_address}" \
             -s 3,ahci-cd,/vm/.iso/archlinux-2023.04.01-x86_64.iso \
-            -s 29,fbuf,tcp=0.0.0.0:5900,w=1920,h=1080 \
             -s 30,xhci,tablet \
             -s 31,lpc -l com1,stdio \
             -l "bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd,${mount_path}/BHYVE_UEFI_VARS.fd" \
@@ -146,7 +148,16 @@ function ng_exists {
 function calculate_mac_address {
     name="$1"
     source=$(md5 -r -s "$name" | awk '{print $1}')
-    echo "${source:0:2}:${source:2:2}:${source:4:2}:${source:6:2}:${source:8:2}:${source:10:2}"
+    echo "06:${source:0:2}:${source:2:2}:${source:4:2}:${source:6:2}:${source:8:2}"
+}
+
+function find_available_port {
+    start_port="$1"
+    port="$start_port"
+    while true; do
+        sockstat -P tcp -p 443
+        port=$((port + 1))
+    done
 }