The previous commit added set_ephemeral_port_range() to
avoid port conflicts on FreeBSD by requesting ports from the high
ephemeral range (49152-65535) instead of the default range
which overlaps with the test framework's static port range.
That fix was applied to the SOCKS5 server but not to P2P listeners
created via NetworkThread.create_listen_server(). This commit extends
the fix to cover P2P listeners as well.
When port=0 is requested (dynamic allocation), we now:
1. Manually create a socket with the appropriate address family
2. Call set_ephemeral_port_range() to configure the port range
3. Bind and listen on the socket
4. Pass the pre-configured socket to asyncio's create_server()
This ensures that dynamically allocated ports for P2P listeners also
come from the high range on FreeBSD, avoiding conflicts with the test
framework's static port assignments.
Co-Authored-By: Vasil Dimov <vd@FreeBSD.org>
