RHEL7.2 をインストール後、rpc-statd.service が起動できないため、nfs-server.service が起動できない

Issue

• RHEL7.2 を新規にインストールすると、rpc-statd.service が起動できないため、nfs-server.service が起動できません。
• 以下のメッセージが /var/log/messages に出力されます。

Dec  3 09:44:53 nfs-server systemd:Mounting NFSD configuration filesystem...
Dec  3 09:44:53 nfs-server systemd:Started Kernel Module supporting RPCSEC_GSS.
Dec  3 09:44:53 nfs-server systemd:Starting GSSAPI Proxy Daemon...
Dec  3 09:44:53 nfs-server systemd:Reached target Host and Network Name Lookups.
Dec  3 09:44:53 nfs-server systemd:Starting Host and Network Name Lookups.
Dec  3 09:44:53 nfs-server systemd:Starting NFS status monitor for NFSv2/3 locking....
Dec  3 09:44:53 nfs-server systemd:Reached target RPC Port Mapper.
Dec  3 09:44:53 nfs-server systemd:Starting RPC Port Mapper.
Dec  3 09:44:53 nfs-server systemd:Mounting RPC Pipe File System...
Dec  3 09:44:53 nfs-server rpc.statd[17212]:Version 1.3.0 starting
Dec  3 09:44:53 nfs-server rpc.statd[17212]:Flags:TI-RPC
Dec  3 09:44:53 nfs-server rpc.statd[17212]:Initializing NSM state
Dec  3 09:44:53 nfs-server kernel:Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
Dec  3 09:44:53 nfs-server rpc.statd[17212]: failed to create RPC listeners, exiting
Dec  3 09:44:53 nfs-server systemd:Mounted RPC Pipe File System.
Dec  3 09:44:53 nfs-server systemd:Mounted NFSD configuration filesystem.
Dec  3 09:44:53 nfs-server systemd:Started GSSAPI Proxy Daemon.
Dec  3 09:44:53 nfs-server systemd: rpc-statd.service: control process exited, code=exited status=1
Dec  3 09:44:53 nfs-server systemd:Failed to start NFS status monitor for NFSv2/3 locking..
Dec  3 09:44:53 nfs-server systemd:Unit rpc-statd.service entered failed state.
Dec  3 09:44:53 nfs-server systemd: rpc-statd.service failed.
Dec  3 09:44:53 nfs-server systemd:Starting NFS Mount Daemon...
Dec  3 09:44:53 nfs-server systemd:Started RPC security service for NFS server.
Dec  3 09:44:53 nfs-server systemd:Started RPC security service for NFS client and server.
Dec  3 09:44:53 nfs-server systemd:Starting NFSv4 ID-name mapping service...
Dec  3 09:44:53 nfs-server systemd:Started NFSv4 ID-name mapping service.
Dec  3 09:44:53 nfs-server rpc.mountd[17221]:Could not bind socket:(98) Address already in use
Dec  3 09:44:53 nfs-server rpc.mountd[17221]:Could not bind socket:(98) Address already in use
Dec  3 09:44:53 nfs-server rpc.mountd[17221]:Could not bind socket:(98) Address already in use
Dec  3 09:44:53 nfs-server rpc.mountd[17221]:Could not bind socket:(98) Address already in use
Dec  3 09:44:53 nfs-server rpc.mountd[17221]: mountd:No V2 or V3 listeners created!
Dec  3 09:44:53 nfs-server rpc.mountd[17224]:Version 1.3.0 starting
Dec  3 09:44:53 nfs-server systemd:Started NFS Mount Daemon.
Dec  3 09:44:53 nfs-server systemd:Starting NFS server and services...
Dec  3 09:44:53 nfs-server rpc.nfsd: rpc.nfsd: writing fd to kernel failed: errno 111 (Connection refused)
Dec  3 09:44:53 nfs-server kernel: svc: failed to register nfsdv3 RPC service (errno 111).
Dec  3 09:44:53 nfs-server kernel: svc: failed to register nfsaclv3 RPC service (errno 111).
Dec  3 09:44:53 nfs-server kernel: svc: failed to register nfsdv3 RPC service (errno 97).
Dec  3 09:44:53 nfs-server kernel: svc: failed to register nfsaclv3 RPC service (errno 97).
Dec  3 09:44:53 nfs-server rpc.nfsd: rpc.nfsd: unable to set any sockets for nfsd
Dec  3 09:44:53 nfs-server systemd: nfs-server.service: main process exited, code=exited, status=1/FAILURE
Dec  3 09:44:53 nfs-server systemd:Failed to start NFS server and services.
Dec  3 09:44:53 nfs-server systemd:Unit nfs-server.service entered failed state.
Dec  3 09:44:53 nfs-server systemd: nfs-server.service failed.
Dec  3 09:44:53 nfs-server systemd:Stopping NFS Mount Daemon...
Dec  3 09:44:53 nfs-server systemd:Stopping NFSv4 ID-name mapping service...