ddboost replication over interface not in ddboost interface group

Hi, is it possible to direct ddboost replication data over a network interface that is not a member of the ddboost interface group?

We have a system with 2 * 10gb interfaces configured within the ddboost ifgroup. Backups are currently directed to the system using a ddboost if group IP address. Replication is functioning successfully using ddboost and initiated using the backup software.

I also have 2 * 1gb interfaces configured as a failover group and I would like replication to be directed over these interfaces. These interfaces are not members of the IFgroup. I would like to know how do I use these interfaces for replication but maintain the use of the 10gb interfaces for local backups.

Is it as simple as specifying entries in the local host file of each data domain so that they reference each other by the 1gb IP address?

Are static routes required to be setup on each data domain rather than host file entries?

Or do I need to configure the data domain using command options such as 'ddboost file-replication'.

Thanks, Mark