cbworkloadgen failed to run with ipv6 enable server.

2017-12-29 13:13:14,224: mt "6f75" is not int, reset it to default port number

2017-12-29 13:13:14,239: mt "6f75" is not int, reset it to default port number

Exception in thread s0:

Traceback (most recent call last):

  File "/usr/lib64/python2.7/threading.py", line 812, in __bootstrap_inner

    self.run()

  File "/usr/lib64/python2.7/threading.py", line 765, in run

    self.__target(*self.__args, **self.__kwargs)

  File "/opt/couchbase/lib/python/pump_mc.py", line 96, in run

    rv, batch, need_backoff = self.scatter_gather(mconns, batch)

  File "/opt/couchbase/lib/python/pump_cb.py", line 73, in scatter_gather

    rv, conn = self.find_conn(mconns, vbucket_id, msgs)

  File "/opt/couchbase/lib/python/pump_cb.py", line 368, in find_conn

    rv, conn = CBSink.connect_mc(host, port, self.opts.username, self.opts.password, bucket)

  File "/opt/couchbase/lib/python/pump_mc.py", line 348, in connect_mc

    return pump.get_mcd_conn(host, port, username, password, bucket)

  File "/opt/couchbase/lib/python/pump.py", line 1106, in get_mcd_conn

    conn = cb_bin_client.MemcachedClient(host, port)

  File "/opt/couchbase/lib/python/cb_bin_client.py", line 45, in __init__

    self.s.connect_ex((host, port))

  File "/usr/lib64/python2.7/socket.py", line 224, in meth

    return getattr(self._sock,name)(*args)

gaierror: [Errno -2] Name or service not known

2017-12-29 13:13:14,224: mt "6f75" is not int, reset it to default port number