Bill Paul
9934af38df
Fix for PR #4147: apparently BIND now returns a status of NO_RECOVERY
at the end of gethostanswer()/getanswer()/whatever where it used to return TRY_AGAIN. This breaks the domain list traversal in ypserv's async DNS lookup module: it would only retry using the domain(s) from the 'domain' or 'search' lines in /etc/resolv.conf if __dns_getanswer() returned TRY_AGAIN. Changed the test so that either TRY_AGAIN or NO_RECOVERY will work. This seemed to me the best solution in the event somebody tries to compile this code on an older system with a different version of BIND. (You shouldn't do that of course, but then there's a lot of things in the world that you shouldn't do and people do them anyway.)
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