Method to update the out of date MAC/OUI database in the python3 netaddr library

runbook for fixing netaddr

$ sudo pip3 install netaddr
[sudo] password for eric: 
The directory '/home/eric/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/home/eric/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting netaddr
  Downloading https://files.pythonhosted.org/packages/ba/97/ce14451a9fd7bdb5a397abf99b24a1a6bb7a1a440b019bebd2e9a0dbec74/netaddr-0.7.19-py2.py3-none-any.whl (1.6MB)
    100% |████████████████████████████████| 1.6MB 978kB/s 
Installing collected packages: netaddr
Successfully installed netaddr-0.7.19
[23:24] eric @ p52: ~
$ python3
Python 3.6.8 (default, Aug 20 2019, 17:12:48) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import netaddr as na
>>> import re
>>> _mac = '88-E9-FE-1F-65-7D'
>>> if re.match('[0-9a-f]{2}([-:]?)[0-9a-f]{2}(\\1[0-9a-f]{2}){4}$', _mac.lower()):
...     print(f'{_mac} - {na.EUI(_mac).oui.registration().org}')
... 
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/usr/local/lib/python3.6/dist-packages/netaddr/eui/__init__.py", line 478, in oui
    return OUI(self.value >> 24)
  File "/usr/local/lib/python3.6/dist-packages/netaddr/eui/__init__.py", line 101, in __init__
    raise NotRegisteredError('OUI %r not registered!' % oui)
netaddr.core.NotRegisteredError: OUI 8972798 not registered!
>>> ctrl+d
[23:24] eric @ p52: ~
$ python3
Python 3.6.8 (default, Aug 20 2019, 17:12:48) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import netaddr
>>> netaddr.__file__
'/usr/local/lib/python3.6/dist-packages/netaddr/__init__.py'
>>> ctrl+d
[23:28] eric @ p52: ~ 
$ cd /usr/local/lib/python3.6/dist-packages/netaddr
[23:28] eric @ p52: /usr/local/lib/python3.6/dist-packages/netaddr 
$ ls
compat.py  contrib  core.py  eui  fbsocket.py  __init__.py  ip  __pycache__  strategy
[23:28] eric @ p52: /usr/local/lib/python3.6/dist-packages/netaddr 
$ cd ./eui
[23:28] eric @ p52: /usr/local/lib/python3.6/dist-packages/netaddr/eui 
$ ls -lha
total 6.3M
drwxr-sr-x 3 root staff 4.0K Sep 27 23:24 .
drwxr-sr-x 7 root staff 4.0K Sep 27 23:24 ..
-rw-r--r-- 1 root staff  94K Sep 27 23:24 iab.idx
-rw-r--r-- 1 root staff 2.4M Sep 27 23:24 iab.txt
-rw-r--r-- 1 root staff 9.3K Sep 27 23:24 ieee.py
-rw-r--r-- 1 root staff  25K Sep 27 23:24 __init__.py
-rw-r--r-- 1 root staff 410K Sep 27 23:24 oui.idx
-rw-r--r-- 1 root staff 3.5M Sep 27 23:24 oui.txt
drwxr-sr-x 2 root staff 4.0K Sep 27 23:24 __pycache__
[23:28] eric @ p52: /usr/local/lib/python3.6/dist-packages/netaddr/eui 
$ sudo mv ./oui.txt ./oui.txt.backup
[23:28] eric @ p52: /usr/local/lib/python3.6/dist-packages/netaddr/eui 
$ sudo wget http://standards-oui.ieee.org/oui.txt
--2019-09-27 23:29:04--  http://standards-oui.ieee.org/oui.txt
Resolving standards-oui.ieee.org (standards-oui.ieee.org)... 140.98.223.27
Connecting to standards-oui.ieee.org (standards-oui.ieee.org)|140.98.223.27|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 4255622 (4.1M) [text/plain]
Saving to: ‘oui.txt’

oui.txt                       100%[==============================================>]   4.06M  1.32MB/s    in 3.1s    

2019-09-27 23:29:08 (1.32 MB/s) - ‘oui.txt’ saved [4255622/4255622]

[23:29] eric @ p52: /usr/local/lib/python3.6/dist-packages/netaddr/eui 
$ ls
iab.idx  iab.txt  ieee.py  __init__.py  oui.idx  oui.txt  oui.txt.backup  __pycache__
[23:29] eric @ p52: /usr/local/lib/python3.6/dist-packages/netaddr/eui 
$ sudo mv ./oui.idx ./oui.idx.backup
[23:29] eric @ p52: /usr/local/lib/python3.6/dist-packages/netaddr/eui 
$ ls
iab.idx  iab.txt  ieee.py  __init__.py  oui.idx.backup  oui.txt  oui.txt.backup  __pycache__
[23:29] eric @ p52: /usr/local/lib/python3.6/dist-packages/netaddr/eui 
$ sudo ./ieee.py
sudo: ./ieee.py: command not found
Exit status: 1 [23:29] eric @ p52: /usr/local/lib/python3.6/dist-packages/netaddr/eui 
$ sudo python3 ./ieee.py 
[23:29] eric @ p52: /usr/local/lib/python3.6/dist-packages/netaddr/eui 
$ ls
iab.idx  iab.txt  ieee.py  __init__.py  oui.idx  oui.idx.backup  oui.txt  oui.txt.backup  __pycache__
[23:29] eric @ p52: /usr/local/lib/python3.6/dist-packages/netaddr/eui 
$ python3
Python 3.6.8 (default, Aug 20 2019, 17:12:48) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import netaddr as na
>>> import re
>>> 
>>> _mac = '88-E9-FE-1F-65-7D'
>>> if re.match('[0-9a-f]{2}([-:]?)[0-9a-f]{2}(\\1[0-9a-f]{2}){4}$', _mac.lower()):
...     print(f'{_mac} - {na.EUI(_mac).oui.registration().org}')
... 
88-E9-FE-1F-65-7D - Apple, Inc.
>>>