Re: why usr/include/linux/if_frad.h is required

From: Stephen Hemminger <redacted>
Date: Wed, 21 Jan 2009 17:38:38 +1100

There are no references if_frad.h in the version of Sangoma (out of
tree) code that we use in Vyatta.

frad-0.20:src/dlcicfg.c

It includes linux/if_frad.h and also performs the DLCI_SET_CONF
ioctl.

Enough evidence to show we need to keep this header in the
export set.  Let's just kill the bogus CONFIG_* ifdef
tests in there.