Hello, When I dig at my bind9 resolver with qtype=ANY, I find the message never expire and being refetched until the last rrset expire, if there are several rrsets in answer section, when one rrset in answer section expires, the query client will get one cached message just without the expired rrset. It's different with unbound and google dns 8.8.8.8, which will refetch the entire message from authoritative server when any rrset in answer section expire.
You can do the same test with qname=cnnic.cn, cnnic.cn mx record's ttl is only 10s. But, Bind9 resolver will refetch the qtype!=ANY message which have cname and other type records in answer section, when any rrset expires. So my question is why bind9 do like that? 谢谢 Zhang Likun Software Department, CNNIC Phone: 8610-58813250 Email: zhangli...@cnnic.cn MSN: kerryzhang1...@hotmail.com _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
