==== Generate mac address ====
<code bash>
openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/.$//'
</code>
или
<code bash>
GetMAC()
{
  if [ -n "$1" ]; then
    OID="00:16:3e"
    RAND=$(echo $1 | md5sum | sed 's/\(..\)\(..\)\(..\).*/\1:\2:\3/')
    echo "$OID:$RAND"
  else
    echo "ERROR: please supply hostname to create MAC address from, e.g.:"
    echo "       $FUNCNAME myhost"
  fi
}

$ GetMAC myhost
</code>