puppetlabs/facter — pull request #96 by stschulte (2011-11-05 09:45:51+00:00)
Title: Ticket/1.6.x/10490

If we do not find a macaddress when running ifconfig -a (case is
described in #10490 and is reproduceable if you deconfigure all
interfaces despite lo0) we get the error:

Could not retrieve macaddress: private method split' called for
nil:NilClass

Return nil as a macaddress if no macaddress can be found. The same
behaviour is already used for macaddresses on windows.