In order for the NFS client to bind to multiple TCPIP stacks, a single rpcbind/portmap should be used. The rpcbind/portmap procs should not use affinity to bind to a specific TCPIP stack. Also, the system should use a single resolver for all stacks on the system. If you require transport affinity with the NFS Client, see the section "Using specific transports under CINET" in z/OS UNIX System Services Planning for information on using PARM=TP(TPNAME) on the EXEC statement that starts BPXVCLNY in the colony address space procedure.