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by zAy0LfpBZLC8mAC
2716 days ago
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No, authoritative servers are simply required to follow standards, EDNS support is not required, none of this is about any sort of forced migration, it is only about discontinuing support for broken software after 20 years of compatibility hacks. The EDNS fallback method does not require a timeout. A standards-compliant DNS server that does not support EDNS should ignore EDNS records in the request and simply send an old-style response that any EDNS capable resolver is still required to handle correctly. The problem is only with servers that simply don't respond to requests containing EDNS records at all, even though they are required to by the (old, pre-EDNS) standard. |
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