udns_resolver.c:916: dns_submit_dn: Assertion `q->dnsq_origdnl0 > 0' failed.

[Iñaki Baz Castillo]

2011/7/5 Iñaki Baz Castillo <ibc at aliax.net>:
> Hi, note that I don't mean "a._" but "a. _" (with space, so you must
> enclose the string between "" to pass it as a single argument to the
> call).
> Sorry, I was wrong, please use ".a _".

I've tested your code with "a. _" and produces:

  .a _: valid domain but no data of requested type

However in my Ruby C extension (which uses udns asyncronously) it
produces ("today") a timeout so tempfail.

-- 
Iñaki Baz Castillo
<ibc at aliax.net>