$ORIGIN child.parent.good-mixed-2.basic01.xa.            ; Must end with "."
$TTL 3600

@       SOA     ns1 admin. (
                2024041903      ; serial
                6h              ; refresh
                1h              ; retry
                1w              ; expire
                1d )            ; minimum

@		NS	ns1
@		NS	ns2
@               NS      ns4.parent.good-mixed-2.basic01.xa.

ns1		A	127.12.1.51
ns1		AAAA	fda1:b2:c3:0:127:12:1:51
ns2		A	127.12.1.52
ns2		AAAA	fda1:b2:c3:0:127:12:1:52