This switch has been kept disabled in edx.org for well over a year with no
trouble, and the migration to `CLOSEST_CLIENT_IP_FROM_HEADERS`
was introduced in Nutmeg.
DEPR issue: https://github.com/openedx/edx-platform/issues/33733
The IP chain code has moved to edx-django-utils—except for the legacy-IP code,
which is now in a new module. This will allow other IDAs to use the IP code.
Commit includes some adjustments to the toggle annotation.
Part of <https://github.com/openedx/edx-django-utils/issues/241>.
Specifically:
- check ALL ip addresses in the client ip chain for blocking
- check RIGHTMOST ip address in the client ip chain for allowing
Before, we always checked the LEFTMOST ip address in both cases.
AA-1234
