TXT query plus CNAME equals A query

[Geoff Hoff]

When using the instructions here
https://www.dns-oarc.net/oarc/services/porttest to see how maradns
rates for query port randomization, I found an unexpected result.  The
instructions are to run the query "dig +short porttest.dns-oarc.net
TXT".  That entry is a CNAME for
z.y.x.w.v.u.t.s.r.q.p.o.n.m.l.k.j.i.h.g.f.e.d.c.b.a.pt.dns-oarc.net.
Doing a packet capture, maradns does a TXT query for the first entry,
but after following the CNAME, it does an A query.  Both PowerDNS
recursor and unbound continue with TXT queries after the CNAME.  From
the weblog, I saw this post
http://maradns.blogspot.com/2008/06/deadwood-200-released.html that
indicates that the CNAME handling is known to non-optimal.

This isn't a significant problem, but thought I'd share in case anyone
else reading the list encounters the same thing.