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IEEE/ICACT20220132 Question.1 Questioner: spcho@hanmail.net 2022-02-13 오후 2:27:01	IEEE/ICACT20220132 Answer.1 Answer by Auhor yongj@gsic.titech.ac.jp 2022-02-13 오후 2:27:01
How to check if DNSSEC validation failed? Could you please explain the verification method and procedure.	Thank you very much for your question. If the DNSSEC validation is failed on the external full-service resolver, it replies a DNS response with "SERVFAIL" flag. Thus, the DNS proxy installed on the end client will notice the DNSSEC validation failure and performs the DNSSEC validation by itself. If the DNSSEC validation is failed on the end client, the end client can get error from the DNS proxy so that the end client can notice the DNSSEC validation failure.

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