Move error reporting on ethernet case to util. Make splitting work on any...

Move error reporting on ethernet case to util. Make splitting work on any separator not in the expected set of ethernet address characters

src/hostinfo/dhcpd.py

@@ -267,8 +267,6 @@ def emit_hosts(tree, options, networks, pxeboot=False):
         for ethernet in util.ethernets(ip.ethernet[0:]):
             if pxeboot == 'only' and not bool(ip._pxeboot_):
                 continue
-            if ethernet.lower() != ethernet:
-                raise util.HostinfoException('%s not lower-case' % ethernet)
             if ip.never[0]:
                 if match(util.address(ip.never[0])):
                     if not ethernet in never:

src/hostinfo/dhcpd_ipv6.py

@@ -174,8 +174,6 @@ def emit_hosts(tree, options, networks):
     for ip in tree._host_._interface_._ipv6_:
         # Find all hosts that associated with this network
         for ethernet in util.ethernets(ip.ethernet[0:]):
-            if ethernet.lower() != ethernet:
-                raise util.HostinfoException('%s not lower-case' % ethernet)
             if ip.never[0]:
                 if match(util.address(ip.never[0])):
                     if not ethernet in never:

src/hostinfo/util.py

@@ -2,6 +2,7 @@ import ipaddr
 import itertools
 import types
 import hostinfo.parser
+import re
 
 def network(s):
     if s.network[0] and s.netmask[0]:
@@ -32,7 +33,9 @@ def subnet(tree, addr):
 def ethernets(ether):
     if ether == None:
         return []
-    return ether.split(',')
+    if ether.lower() != ether:
+        raise HostinfoException('%s not lower-case' % ether)
+    return re.split('[^:0-9a-fA-F]+', ether)
 
 def aton(addr):
     result = long(0)