Notes on CNAME (2/2)

Note 3: do not specify multiple CNAMEs
    dup.example. CNAME foo.example.
    dup.example. CNAME bar.example.

Note 4: do not mix CNAME with other RRs
    dup.example. CNAME foo.example.
    dup.example. A     192.0.2.2

Recent BIND does not work with the invalid configurations
will be ignored or rejected