ping tests failing due to insufficient access

[jaraco]

Tests for ping are failing on Ubuntu hosts.

Details

________________________ [doctest] jaraco.net.icmp.ping ________________________
010 
011     Send an ICMP Echo request to a host and return how long it takes.
012 
013     Raise socket.timeout if no response is received within timeout.
014 
015     >>> ping('127.0.0.1')
UNEXPECTED EXCEPTION: SocketPermissionError('A prior configuration of your OS is required to use ICMP sockets without root privileges. Read more on https://github.com/ValentinBELYN/icmplib')
Traceback (most recent call last):
  File "/home/runner/work/jaraco.net/jaraco.net/.tox/py/lib/python3.11/site-packages/icmplib/sockets.py", line 88, in __init__
    self._sock = self._create_socket(
                 ^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/work/jaraco.net/jaraco.net/.tox/py/lib/python3.11/site-packages/icmplib/sockets.py", line 486, in _create_socket
    return socket.socket(
           ^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.11/x64/lib/python3.11/socket.py", line 232, in __init__
    _socket.socket.__init__(self, family, type, proto, fileno)
PermissionError: [Errno 13] Permission denied
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.11.11/x64/lib/python3.11/doctest.py", line 1355, in __run
    exec(compile(example.source, filename, "single",
  File "<doctest jaraco.net.icmp.ping[0]>", line 1, in <module>
  File "/home/runner/work/jaraco.net/jaraco.net/jaraco/net/icmp.py", line 23, in ping
    host = icmplib.ping(dest_addr, count=1, timeout=timeout, privileged=False)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/work/jaraco.net/jaraco.net/.tox/py/lib/python3.11/site-packages/icmplib/ping.py", line 141, in ping
    with _Socket(source, privileged) as sock:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/work/jaraco.net/jaraco.net/.tox/py/lib/python3.11/site-packages/icmplib/sockets.py", line 97, in __init__
    raise SocketPermissionError(privileged)
icmplib.exceptions.SocketPermissionError: A prior configuration of your OS is required to use ICMP sockets without root privileges. Read more on https://github.com/ValentinBELYN/icmplib
/home/runner/work/jaraco.net/jaraco.net/jaraco/net/icmp.py:15: UnexpectedException

The last successful run was 5 months ago.

I suspect the Ubuntu-latest image has changed and is misconfigured to disallow ping packets.

[jaraco]

According to this doc, it should not be necessary to enable a special parameter to allow ping on Ubuntu 20.04 or later.

[jaraco]

I found this report also implicating Ubuntu 24.04 as having changed something about the permission structure, but it doesn't really provide an explanation.

[jaraco]

Using this dockerfile:

FROM jaraco/multipy-tox
RUN useradd -m -s /bin/bash jaraco
RUN mkdir jaraco.net
RUN chmod 777 jaraco.net
RUN chmod -R o+rwx /root
USER jaraco
RUN git clone https://github.com/jaraco/jaraco.net
WORKDIR jaraco.net

I confirmed that the tests run successfully on Ubuntu 24.04 in an unprivileged account in a standard configuration, so there's something about the github runners that are blocking the ICMP privilege.