clnt_create: RPC: Port mapper failure - Authentication error

# nmap localhost
  
Starting Nmap 6.47 ( http://nmap.org ) at 2015-12-07 00:53 VLAT
Nmap scan report for localhost (127.0.0.1)
Host is up (0.0000030s latency).
Not shown: 997 closed ports
PORT      STATE SERVICE
111/tcp   open  rpcbind

# cat /etc/exports
#
# /etc/exports: access control list for exported filesystems. See exports(5).
#

/mnt/base 192.168.101.1/24(rw,async,no_subtree_check)


# End of file

# rpcinfo -p                                 
   program vers proto   port  service
    100000    4   tcp    111  portmapper
    100000    3   tcp    111  portmapper
    100000    2   tcp    111  portmapper
    100000    4   udp    111  portmapper
    100000    3   udp    111  portmapper
    100000    2   udp    111  portmapper
    100024    1   udp  53061  status
    100024    1   tcp  51182  status

# showmount -e                               
clnt_create: RPC: Port mapper failure - Authentication error

# iptables -vn -L INPUT
Chain INPUT (policy ACCEPT 805 packets, 98497 bytes)
 pkts bytes target     prot opt in     out     source               destination

# ss -pnltu        
Netid State      Recv-Q Send-Q                      Local Address:Port                                     Peer Address:Port              
udp   UNCONN     0      0                                       *:68                                                  *:*                   users:(("dhcpcd",pid=263,fd=8))
udp   UNCONN     0      0                                       *:111                                                 *:*                   users:(("rpcbind",pid=14015,fd=6))
udp   UNCONN     0      0                                       *:623                                                 *:*                   users:(("rpcbind",pid=14015,fd=7))
udp   UNCONN     0      0                                       *:2049                                                *:*                  
udp   UNCONN     0      0                                       *:34899                                               *:*                  
udp   UNCONN     0      0                                       *:56146                                               *:*                   users:(("rpc.mountd",pid=14037,fd=9))
udp   UNCONN     0      0                                       *:39825                                               *:*                   users:(("rpc.mountd",pid=14037,fd=11))
udp   UNCONN     0      0                                       *:48357                                               *:*                   users:(("rpc.mountd",pid=14037,fd=7))
tcp   LISTEN     0      0                                       *:45312                                               *:*                   users:(("rpc.mountd",pid=14037,fd=10))
tcp   LISTEN     0      0                                       *:2049                                                *:*                  
tcp   LISTEN     0      0                                       *:42631                                               *:*                   users:(("rpc.mountd",pid=14037,fd=12))
tcp   LISTEN     0      0                               127.0.0.1:6600                                                *:*                   users:(("mpd",pid=353,fd=9))
tcp   LISTEN     0      0                                       *:48810                                               *:*                  
tcp   LISTEN     0      0                                       *:60366                                               *:*                   users:(("rpc.mountd",pid=14037,fd=8))
tcp   LISTEN     0      0                                       *:111                                                 *:*                   users:(("rpcbind",pid=14015,fd=8))
tcp   LISTEN     0      0                                       *:6000                                                *:*                   users:(("X",pid=405,fd=1))