No. Pinning not required in your case (Creating 184.108.40.206.x DB on 220.127.116.11 Cluster )
You can confirm this while trying create DB using DBCA . DBCA will show "Create Real application cluster database"
Pinning is required for, say, 10.2 databases as it pins CSS and "forces" administrative managed (versus policy managed) servers within a pool. It is not required to support an 11.2 database, even if it is a different version.