升级Win11 22H2后WSL2 Ubuntu22.04中pip/pipenv下载包超时

升级到Windows 11 22H2后，WSL 2中的Ubuntu 22.04环境里，pip和pipenv均无法成功下载任何Python包。升级前该WSL 2 Ubuntu 22.04环境正常，能成功安装各类包。

以下是在全新安装的Ubuntu 22.04中尝试升级pip（先通过sudo apt install python3-pip安装旧版pip）时的错误输出：

user@NAME:~/stem-cutpoint$ python3 -m pip install --upgrade pip
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: pip in /usr/lib/python3/dist-packages (22.0.2)
Collecting pip
  Downloading pip-23.0.1-py3-none-any.whl (2.1 MB)
     ╸━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 0.0/2.1 MB 3.1 MB/s eta 0:00:01
ERROR: Exception:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/pip/_vendor/urllib3/response.py", line 438, in _error_catcher
    yield
  File "/usr/lib/python3/dist-packages/pip/_vendor/urllib3/response.py", line 519, in read
    data = self._fp.read(amt) if not fp_closed else b""
  File "/usr/lib/python3/dist-packages/pip/_vendor/cachecontrol/filewrapper.py", line 90, in read
    data = self.__fp.read(amt)
  File "/usr/lib/python3.10/http/client.py", line 465, in read
    s = self.fp.read(amt)
  File "/usr/lib/python3.10/socket.py", line 705, in readinto
    return self._sock.recv_into(b)
  File "/usr/lib/python3.10/ssl.py", line 1274, in recv_into
    return self.read(nbytes, buffer)
  File "/usr/lib/python3.10/ssl.py", line 1130, in read
    return self._sslobj.read(len, buffer)
TimeoutError: The read operation timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/pip/_internal/cli/base_command.py", line 165, in exc_logging_wrapper
    status = run_func(*args)
  File "/usr/lib/python3/dist-packages/pip/_internal/cli/req_command.py", line 205, in wrapper
    return func(self, options, args)
  File "/usr/lib/python3/dist-packages/pip/_internal/commands/install.py", line 339, in run
    requirement_set = resolver.resolve(
  File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 94, in resolve
    result = self._result = resolver.resolve(
  File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 481, in resolve
    state = resolution.resolve(requirements, max_rounds=max_rounds)
  File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 348, in resolve
    self._add_to_criteria(self.state.criteria, r, parent=None)
  File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 172, in _add_to_criteria
    if not criterion.candidates:
  File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/structs.py", line 151, in __bool__
    return bool(self._sequence)
  File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/found_candidates.py", line 155, in __bool__
    return any(self)
  File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/found_candidates.py", line 143, in <genexpr>
    return (c for c in iterator if id(c) not in self._incompatible_ids)
  File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/found_candidates.py", line 97, in _iter_built_with_inserted
    candidate = func()
  File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/factory.py", line 215, in _make_candidate_from_link
    self._link_candidate_cache[link] = LinkCandidate(
  File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 288, in __init__
    super().__init__(
  File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 158, in __init__
    self.dist = self._prepare()
  File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 227, in _prepare
    dist = self._prepare_distribution()
  File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 299, in _prepare_distribution
    return preparer.prepare_linked_requirement(self._ireq, parallel_builds=True)
  File "/usr/lib/python3/dist-packages/pip/_internal/operations/prepare.py", line 487, in prepare_linked_requirement
    return self._prepare_linked_requirement(req, parallel_builds)
  File "/usr/lib/python3/dist-packages/pip/_internal/operations/prepare.py", line 532, in _prepare_linked_requirement
    local_file = unpack_url(
  File "/usr/lib/python3/dist-packages/pip/_internal/operations/prepare.py", line 214, in unpack_url
    file = get_http_url(
  File "/usr/lib/python3/dist-packages/pip/_internal/operations/prepare.py", line 94, in get_http_url
    from_path, content_type = download(link, temp_dir.path)
  File "/usr/lib/python3/dist-packages/pip/_internal/network/download.py", line 146, in __call__
    for chunk in chunks:
  File "/usr/lib/python3/dist-packages/pip/_internal/cli/progress_bars.py", line 304, in _rich_progress_bar
    for chunk in iterable:
  File "/usr/lib/python3/dist-packages/pip/_internal/network/utils.py", line 63, in response_chunks
    for chunk in response.raw.stream(
  File "/usr/lib/python3/dist-packages/pip/_vendor/urllib3/response.py", line 576, in stream
    data = self.read(amt=amt, decode_content=decode_content)
  File "/usr/lib/python3/dist-packages/pip/_vendor/urllib3/response.py", line 512, in read
    with self._error_catcher():
  File "/usr/lib/python3.10/contextlib.py", line 153, in __exit__
    self.gen.throw(typ, value, traceback)
  File "/usr/lib/python3/dist-packages/pip/_vendor/urllib3/response.py", line 443, in _error_catcher
    raise ReadTimeoutError(self._pool, None, "Read timed out.")
pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.

已尝试的排查操作：

• 尝试安装不同包（pip本身、black、pandas等均出现该问题）
• 参考相关方案，分别使用pip install package、python3 -m pip install package、pipenv install package或python3 -m pipenv install package在pipenv虚拟环境内外执行安装
• 尝试export DISPLAY=和unset DISPLAY操作（未安装Xserver，为全新WSL Ubuntu环境）
• 完全重装WSL 2中的Ubuntu 22.04
• 重新执行微软官方WSL内核更新步骤，确保内核和WSL版本为最新
• 临时禁用Windows私有和公共网络防火墙
• 重启电脑3次
• 重启路由器
• 在另一台装有WSL 2 Ubuntu 22.04的电脑上测试，可正常下载包
• 执行ping pypi.org确认连通性，且PyPi服务器无故障报告
• 在Windows中完全禁用以太网接口的IPv6并多次重启接口
• 修改/etc/gai.conf以优先IPv4连接并重启

症状始终一致，求解决思路？

内容的提问来源于stack exchange，提问作者Liquid Plasmas