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If transferring or loading a mirror zone fails, resolution should still succeed by means of falling back to regular recursive queries. Currently, though, if a slave zone is present in the zone table and not loaded, a SERVFAIL response is generated. Thus, mirror zones need special handling in this regard. Add a new dns_zt_find() flag, DNS_ZTFIND_MIRROR, and set it every time a domain name is looked up rather than a zone itself. Handle that flag in dns_zt_find() in such a way that a mirror zone which is expired or not yet loaded is ignored when looking up domain names, but still possible to find when the caller wants to know whether the zone is configured. This causes a fallback to recursion when mirror zone data is unavailable without making unloaded mirror zones invisible to code checking a zone's existence. |
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| bind9 | ||
| dns | ||
| irs | ||
| isc | ||
| isccc | ||
| isccfg | ||
| ns | ||
| samples | ||
| win32/bindevt | ||
| .gitignore | ||
| Atffile | ||
| Kyuafile | ||
| Makefile.in | ||