$ORIGIN bad-servers-but-good-nsec-1.dnssec10.xa.

;
$TTL   86400
@   IN   SOA   localhost. root.localhost. (
               12          ; Serial
               3600       ; Refresh
               1200       ; Retry
               2419200    ; Expire
               604800 )   ; Negative Cache TTL
;
@       NS    ns1
@       NS    ns2
@       NS    ns3
@       NS    ns4
@       NS    ns5

ns1     A     127.15.10.31
ns1     AAAA  fda1:b2:c3:0:127:15:10:31
ns2     A     127.15.10.32
ns2     AAAA  fda1:b2:c3:0:127:15:10:32
ns3     A     127.15.10.33
ns3     AAAA  fda1:b2:c3:0:127:15:10:33
ns4     A     127.15.10.34
ns4     AAAA  fda1:b2:c3:0:127:15:10:34
ns5     A     127.15.10.35
ns5     AAAA  fda1:b2:c3:0:127:15:10:35