kind of a losing game to remember to update that comment when
we add another possible family, but hey, maybe it will be a while
until we add one more.

It seems like this section is not valid anymore.
Most of this topics are already explained in different
files.

This approach doesn't require variable-length underlines.

Example:
.../doc/HACKING is now doc/HACKING

- external links use markdown's []() format,
- local files are formated with backquotes,
- duplicated new lines were removed,
- unnecesary single spaces were removed,
- broken links and local paths were updated.

Accept a smaller file and function.
Let router.c grow slightly without warning.
Accept an extra comment line.

Cleanup after 32588.

Comments about 33681.

These tests don't actually trigger bug 32588, but they do increase
the coverage of the auto port config code.

Tests for 32588.

Merge static function declaration deletions from bug32588_042 and
maint-0.4.3 in app/config/config.c.

Merge tests from maint-0.4.1 with new tests from bug32588_035
in test_router.c.

Return early when there is no suitable IPv6 ORPort.
Show the address and port on error, using a convenience function.

Code simplification and refactoring.

Cleanup after 32588.

When IPv6 ORPorts are set to "auto", tor relays and bridges would
advertise an incorrect port in their descriptor.

This may be a low-severity memory safety issue, because the published
port number may be derived from uninitialised or out-of-bounds memory
reads.

Fixes bug 32588; bugfix on 0.2.3.9-alpha.

Due to improved function comments.

Fixes part of bug 33674; not in any released version of tor.