Content-Type: text/plain
Content-Disposition: inline
Content-Transfer-Encoding: binary
MIME-Version: 1.0
X-Mailer: MIME-tools 5.427 (Entity 5.427)
RT-Send-CC:
X-RT-Original-Encoding: iso-8859-1
Content-Length: 256

From the kerberos list discussion, the platform this behavior was
observed on was Solaris 10 / x86.

The obvious possibility is that the resolver is returning -1 when the
response is too big for the buffer, instead of the size of the response
as we expect.