puppetlabs/facter — pull request #471 by jasperla (2013-07-02 15:14:29+00:00)
Title: Add tests for OpenBSD ifconfig with bridge(4) rules (issue #16630)

It seems the issue as described in #16630 has been autofixed since the reporter opened the ticket.
@ahpook requested a fixture, which I added and running the test made me realize the behaviour is correct now; a nil mac address is returned.

http://projects.puppetlabs.com/issues/16630