Hi Jeff,
For Protection Manager to use the ndmp preferred interface.Following things need to be done.
For Mirror Relationship the preferred address needs to be set for the host, using the dfm cli.
dfm host set <hostname/id> hostPreferredAddr1=<preferred ip>
Once this is set you will see in the job message, a line like this
Using connection filer1_flier2_1253036407 (X.X.X.X<IPaddrset in the cli for filer1> -> X.X.X.X<IPaddrset in the cli for filer2>), id = 18
For Backup Relationship,(Snapvault) the filer options
ndmpd.preferred_interface needs to be set.
Once this is set you will see in the backup jobs message like
Retrieved preferred interfaces (X.X.X.X) wheree X.X.X.X is the IP of interface set in the filer, for the ndmpd options.
Regards
adai