pullup:

pullup:
 518.   [bug]           The resolver did not realize that a DNAME which was
                        "the answer" to the client's query was "the answer",
                        and such queries would fail. [RT #399]

 517.   [bug]           The resolver's DNAME code would trigger an assertion
                        if there was more than one DNAME in the chain.
                        [RT #399]

 516.   [bug]           Cache lookups which had a NULL node pointer, e.g.
                        those by dns_view_find(), and which would match a
                        DNAME, would trigger an INSIST(!search.need_cleanup)
                        assertion. [RT #399]