- DNS server became unable to resolve domains on March 25 or March 26, 2020.
- The problem disappeared after a while.
Following message was observed in the log.
validating @0xXXXXXXXXXXXX: dlv.isc.org NSEC: verify failed due to bad signature (keyid=xxxxx): RRSIG has expired
- Example 2
validating @0xXXXXXXXXXXXX: dlv.isc.org DNSKEY: verify failed due to bad signature (keyid=xxxxx): RRSIG has expired
- Example 3
validating @0xXXXXXXXXXXXX: domain.example.com A: bad cache hit (domain.example.com.dlv.isc.org/DLV)
- Red Hat Enterprise Linux 6
- BIND 9.8.2-0
- named.conf has the following configuration.
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