com to baidu.com: Authoritative AAAA records exist for ns7.baidu.com, but there are no corresponding AAAA glue records. See RFC 1034, Sec. 4.2.2.
com to baidu.com: The following NS name(s) were found in the authoritative NS RRset, but not in the delegation NS RRset (i.e., in the com zone): dns.baidu.com See RFC 1034, Sec. 4.2.2.
com to baidu.com: The following NS name(s) were found in the delegation NS RRset (i.e., in the com zone), but not in the authoritative NS RRset: ns1.baidu.com See RFC 1034, Sec. 4.2.2.