use sorted when iterating over network interfaces

this helps for unneeded rewrites if dhcpd.conf

install.py

@@ -17,7 +17,6 @@ import re
 import types
 import socket
 from subprocess import Popen, PIPE
-from glob import glob
 from ipaddress import IPv4Interface
 from configparser import ConfigParser
 from os.path import join, getmtime, exists, basename

utils.py

@@ -32,7 +32,7 @@ class BoxInfo:
         self.config = None
         self.macaddr = {}
         self.main_if = None
-        for ifdev in glob('/sys/class/net/*/address'):
+        for ifdev in sorted(glob('/sys/class/net/*/address')):
             ifname = ifdev.split('/')[-2]
             if ifname == 'lo':  # do not consider loopback interface
                 continue