!dnstrace-ip6 traces an IPv6 address through the DNS hierarchy, starting from the root nameservers and following each delegation step until reaching the authoritative nameservers for the corresponding pointer (PTR) record.
!dnstrace-ip6 traces the reverse (PTR record) of an IPv6 address by walking the DNS delegation chain for the ip6.arpa domain. This command provides good visibility into each stage of the lookup.
You may also use !dnstrace or !dnstr to perform the same operation.