Ignore-this: a64e098f8575511bb6e5ef3129635d98

Returning records with SRES_NETWORK_ERR or SRES_TIMEOUT_ERR.
Also setting errno if there is no available DNS servers.

darcs-hash:20090225190935-db55f-aa693bd4c0dd7e4e9c2e0ddba4b9b6a4655f8353.gz