The problem is a DNAME is sometimes returned to gethostby*.getanswer. In some cases this leads to a large amount of log messages such as:

 ping: gethostby*.getanswer: asked for "img.muresinfo.ro.nyud.net IN A", got type "DNAME"

The code in question seems to be 

resolv/nss_dns/dns-host.c

if (type != qtype) {
syslog(LOG_NOTICE|LOG_AUTH,
      "gethostby*.getanswer: asked for \"%s %s %s\", got type \"%s\"",
      qname, p_class(C_IN), p_type(qtype),
      p_type(type));
cp += n;
continue; /* XXX - had_error++ ? */
}

Possible ways to eliminate this:
-message should only occur if the answer doesn't also contain a CNAME. If a CNAME is returned, the message is informational and could be considered LOG_INFO. However, I'm not sure that would reduce the amount of output for some users.

-don't produce the message on DNAME