The fix seems to generate few DeprecationWarning while running test suite with -Wall.

➜  cpython git:(master) git checkout ab513a38c98695f271e448fe2cb7c5e39eeaaaaf~1 Lib/asyncio
Updated 1 path from 4fb4056fbc
➜  cpython git:(master) ✗ ./python.exe -Wall -m test test_asyncio -m test_create_datagram_endpoint_nosoreuseport -m test_create_datagram_endpoint_ip_addr
0:00:00 load avg: 3.12 Run tests sequentially
0:00:00 load avg: 3.12 [1/1] test_asyncio

== Tests result: SUCCESS ==

1 test OK.

Total duration: 133 ms
Tests result: SUCCESS

➜  cpython git:(master) ✗ git checkout ab513a38c98695f271e448fe2cb7c5e39eeaaaaf Lib/asyncio
Updated 1 path from 63d1437ba5
➜  cpython git:(master) ./python.exe -Wall -m test test_asyncio -m test_create_datagram_endpoint_nosoreuseport -m test_create_datagram_endpoint_ip_addr
0:00:00 load avg: 3.03 Run tests sequentially
0:00:00 load avg: 3.03 [1/1] test_asyncio
/Users/kasingar/stuff/python/cpython/Lib/asyncio/events.py:81: DeprecationWarning: The *reuse_address* parameter has been deprecated as of 3.5.10 and is scheduled for removal in 3.11.
  self._context.run(self._callback, *self._args)
/Users/kasingar/stuff/python/cpython/Lib/asyncio/events.py:81: DeprecationWarning: The *reuse_address* parameter has been deprecated as of 3.5.10 and is scheduled for removal in 3.11.
  self._context.run(self._callback, *self._args)

== Tests result: SUCCESS ==

1 test OK.

Total duration: 135 ms
Tests result: SUCCESS