aiodns.error.DNSError: (12, 'Timeout while contacting DNS servers')

• nslookup

# nslookup baidu.com
非权威应答:
服务器:  UnKnown
Address:  192.168.1.1

名称:    baidu.com
Addresses:  220.181.38.148
	  39.156.69.79

• python (Cygwin, Windows Server 2016)

import asyncio
import aiodns
loop = asyncio.get_event_loop()
resolver = aiodns.DNSResolver(loop=loop)
async def query(name, query_type):
    return await resolver.query(name, query_type)
coro = query('baidu.com', 'A')
result = loop.run_until_complete(coro)
print(result)

# python3.7 resolvertest.py
Traceback (most recent call last):
  File "resolvertest.py", line 8, in <module>
    result = loop.run_until_complete(coro)
  File "/usr/lib/python3.7/asyncio/base_events.py", line 587, in run_until_complete
    return future.result()
  File "resolvertest.py", line 6, in query
    return await resolver.query(name, query_type)
aiodns.error.DNSError: (12, 'Timeout while contacting DNS servers')