resolver: debug 1: DNS format error from 10.14.33.17#8600 resolving proxysql-slave.service.healthcheck/AAAA for client IP

**### Overview of the Issue**
getting DNS format error from very often when try to resolve consul service from internal dns.

**### Question** - Why it is looking for AAAA record for consul service to resolve even we have not defined it anywhere ?

**### Consul info for both Client and Server**
consul server V- 1.6.0-1
consul client V- 1.6.0-1

**###OS** - centos 7.7.1908

**### Log Fragments**

Mar 27 08:23:22 nm-dns-03 named[25618]: 27-Mar-2020 08:23:22.493 resolver: debug 1: DNS format error from 10.14.33.17#8600 resolving proxysql-slave.service.healthcheck/AAAA for client 10.14.31.15#46641: Name healthcheck (SOA) not subdomain of zone service.healthcheck -- invalid response
Mar 27 08:23:22 nm-dns-03 named[25618]: 27-Mar-2020 08:23:22.493 lame-servers: info: FORMERR resolving 'proxysql-slave.service.healthcheck/AAAA/IN': 10.140.33.17#8600
Mar 27 08:23:22 nm-dns-03 named[25618]: 27-Mar-2020 08:23:22.495 resolver: debug 1: DNS format error from 10.14.33.17#8600 resolving proxysql-slave.service.healthcheck/AAAA for client 10.14.31.15#46641: Name healthcheck (SOA) not subdomain of zone service.healthcheck -- invalid response
Mar 27 08:23:22 nm-dns-03 named[25618]: 27-Mar-2020 08:23:22.495 lame-servers: info: FORMERR resolving 'proxysql-slave.service.healthcheck/AAAA/IN': 10.14.33.17#8600
Mar 27 08:23:22 nm-dns-03 named[25618]: 27-Mar-2020 08:23:22.495 resolver: debug 1: DNS format error from 10.14.33.17#8600 resolving proxysql-slave.service.healthcheck/AAAA for client 10.14.31.15#46641: Name healthcheck (SOA) not subdomain of zone service.healthcheck -- invalid response
Mar 27 08:23:22 nm-dns-03 named[25618]: 27-Mar-2020 08:23:22.495 lame-servers: info: FORMERR resolving 'proxysql-slave.service.healthcheck/AAAA/IN': 10.14.33.17#8600