ipv6_lookup – Multi-address-family MX Records
**Configuration Change. ** This feature is available in Momentum 4.2 and later.
As of 4.3.0 users do not have to enable the module, but the module must be enabled in 4.2.x
The ipv6_lookup module supports multi-address-family MX records, enabling A record lookups for IPv6 addresses. This module keeps track of whether the A record query succeeded, and if it did when getting the AAAA records back when making a new list of addresses, it copies the existing set of addresses and then adds the new ones to the end of the list.
The ipv6_lookup module is enabled as follows: