Session Sync Fails

[benmaddison]

BGP state query against ASR1001-X running IOS XE 15.5(3)S2 fails with:

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/var/virtenvs/django-venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
    utility.execute()
  File "/var/virtenvs/django-venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 345, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/var/virtenvs/django-venv/lib/python2.7/site-packages/django/core/management/base.py", line 348, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/var/virtenvs/django-venv/lib/python2.7/site-packages/django/core/management/base.py", line 399, in execute
    output = self.handle(*args, **options)
  File "/var/django/prngmgrsite/prngmgr/management/commands/prngmgr-sync.py", line 10, in handle
    management.call_command('prngmgr-sync-sessions', *args, **options)
  File "/var/virtenvs/django-venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 119, in call_command
    return command.execute(*args, **defaults)
  File "/var/virtenvs/django-venv/lib/python2.7/site-packages/django/core/management/base.py", line 399, in execute
    output = self.handle(*args, **options)
  File "/var/django/prngmgrsite/prngmgr/management/commands/prngmgr-sync-sessions.py", line 49, in handle
    bgptable = get_bgp_state(rtr.hostname)
  File "/var/django/prngmgrsite/prngmgr/snmp.py", line 105, in get_bgp_state
    results[address]['cbgpPeer2RemoteAddr'] = ipaddress.IPv4Address(int(address, 16))
ValueError: invalid literal for int() with base 16: 'MC|Y'