mak box type more consistent and display it anyway

- 'rpi' instead of 'ionopi' for a simple raspberry pi
+ fix dirty flag when dhcp server is modified

utils.py

@@ -68,9 +68,9 @@ class BoxInfo:
     CFGDIR = TOOLS / 'cfg'
     BOX_TYPES = {
         '00:0d:b9': 'apu',  # bare apu or control box
-        'b8:27:eb': 'cm3',  # guess iono pi max
-        'e4:5f:01': 'ionopi',  # guess iono pi
-        'd8:3a:dd': 'cm4',  # guess dual-eth-rpi
+        'b8:27:eb': 'cm3',  # compute module 3 (guess iono pi max)
+        'e4:5f:01': 'rpi',  # simple raspberry pi (guess ionopi)
+        'd8:3a:dd': 'cm4',  # compute module 4 (guess dual-eth-rpi)
     }
 
     def __init__(self, macaddr=None, relcfg=None):
@@ -96,7 +96,6 @@ class BoxInfo:
                 with open(ifdev) as f:
                     self.network_interfaces[ifname] = addr = f.read().strip().lower()
                 if ifname in ('eth0', 'enp1s0'):
-                    print('my mac address', addr)
                     macaddr = addr
                     self.main_if = ifname
         self.macaddr = macaddr