Any issue if setting up LTM and GTM/DNS on the same F5 Appliance Cluster?

Hi, we have a pair of F5 appliance, and plan to setup HA cluster. After HA configuration and both appliance in sync, 

1. LTM works well as active/standby mode as expected
2. GTM delivery listener is active on active F5 appliance as expected, the dns queries are routed to the active appliance
3. GTM wild-ip pool members are shown "down" state on Standby appliance. The status of Data Center/Links are also shown "down" on the Standby appliance. Is it normal? Both F5 appliances are configured under the same GTM sync-group with different external physical links. Can someone please advise? Thanks in advance!