RHN Satellite raises traceback if no ip6addr value is present during hw sync

Issue

• If ipv6 is disabled on the client machine then running rhn-profile-sync raises
  following traceback messages in the Red Hat Network Satellite server

[error] RHN 916 2012/05/17 06:10:42 -04:00:
("Unknown HW key =`ip6addr'", {'ip6addr': '', 'hostname': 'unknown', 'ipaddr':
'xx.xx.xx.xx', 'class': 'NETINFO'}, {'class': None})
[error] Exception reported from

[error] Time: Thu May 17 06:10:42 2012
[error] Exception type <type 'exceptions.KeyError'>
[error] 
[error] Exception Handler Information
[error] Traceback (most recent call last):
[error]   File
"/usr/share/rhn/server/rhnServer/server_hardware.py", line 266, in __init__
[error]     dict.dict())
[error] KeyError: ("Don't know how to parse key
`ip6addr''", {'ip6addr': '', 'hostname': 'unknown', 'ipaddr': 'xx.xx.xx.xx', 'class': 'NETINFO'})
[error] 

• Why do I see this in my Red Hat Network Satellite logs?

[Mon Jun 25 09:46:16 2012] [error] proxy: AJP: failed to make connection to backend: localhost
RHN 3417 2012/06/25 09:51:48 +01:00: ("Unknown HW key =`ip6addr'", {'ip6addr': '', 'hostname': 'examplehost', 'ipaddr': '10.0.0.1', 'class': 'NETINFO'}, {'class': None})