* {netbsd,openbsd}/lib/libinet6/getaddrinfo.c: in res_queryN,   try to visit all of the requests given.  don't stop even if   AAAA query returns SERVFAIL.  some of old name servers return   SERVFAIL or NXDOMAIN on AAAA queries, if there's no AAAA records.
* {netbsd,openbsd}/lib/libinet6/getaddrinfo.c: in res_queryN,
  try to visit all of the requests given.  don't stop even if
  AAAA query returns SERVFAIL.  some of old name servers return
  SERVFAIL or NXDOMAIN on AAAA queries, if there's no AAAA records.

MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame